Asus ROG MAXIMUS Z790 HERO Motherboard Owner's Manual
Below you will find brief information for ROG Z790 Series Z790. This manual provides detailed instructions on the ASUS UEFI BIOS, covering both EZ Mode and Advanced Mode, including navigation, setting configurations for overclocking and system monitoring, detailed explanation of all menu items, and how to update the BIOS.
Advertisement
Advertisement
ROG Z790
Series
BIOS Manual
E21287
First Edition
November 2022
2
Copyright© 2022 ASUSTeK COMPUTER INC. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM
ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN
THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe.
ROG Z790 Series BIOS Manual
Contents
2.1 Advanced Mode ............................................................................. 7
EZ Mode....................................................................................... 11
Qfan Control ................................................................................. 12
AI OC Guide ................................................................................. 14
Platform Misc Configuration ......................................................... 58
CPU Configuration ....................................................................... 59
System Agent (SA) Configuration ................................................ 63
PCH Configuration ....................................................................... 65
PCH Storage Configuration.......................................................... 66
PCH-FW Configuration ................................................................ 67
Thunderbolt(TM) Configuration .................................................... 67
Trusted Computing....................................................................... 69
UEFI Variables Protection ............................................................ 70
PCI Subsystem Settings .............................................................. 71
USB Configuration ....................................................................... 72
Network Stack Configuration........................................................ 73
NVMe Configuration ..................................................................... 73
HDD/SSD SMART Information .................................................... 74
APM Configuration ....................................................................... 74
Onboard Devices Configuration ................................................... 75
Intel(R) Rapid Storage Technology .............................................. 78
9.1 ASUS EZ Flash 3 Utility ............................................................... 95
ASUS Secure Erase..................................................................... 95
ASUS User Profile........................................................................ 96
ASUS SPD Information ................................................................ 97
9.5 MemTest86 .................................................................................. 97
9.6 ASUS Armoury Crate ................................................................... 98
9.7 MyASUS....................................................................................... 98
ROG Z790 Series BIOS Manual 3
11.1 ASUS EZ Flash 3 ....................................................................... 100
11.2 ASUS CrashFree BIOS 3 ........................................................... 101
4 ROG Z790 Series BIOS Manual
BIOS Setup
1. Knowing BIOS
The new ASUS UEFI BIOS is a Unified Extensible Interface that complies with UEFI architecture, offering a user-friendly interface that goes beyond the traditional keyboardonly BIOS controls to enable a more flexible and convenient mouse input. You can easily navigate the new UEFI BIOS with the same smoothness as your operating system. The term “BIOS” in this user manual refers to “UEFI BIOS” unless otherwise specified.
BIOS (Basic Input and Output System) stores system hardware settings such as storage device configuration, overclocking settings, advanced power management, and boot device configuration that are needed for system startup in the motherboard CMOS. In normal circumstances, the default BIOS settings apply to most conditions to ensure optimal performance. DO NOT change the default BIOS settings except in the following circumstances:
• An error message appears on the screen during the system bootup and requests you to run the BIOS Setup.
• You have installed a new system component that requires further BIOS settings or update.
Inappropriate BIOS settings may result to instability or boot failure. We strongly recommend that you change the BIOS settings only with the help of a trained service personnel .
• When downloading or updating the BIOS file for your motherboard, rename it as
XXXXX.CAP or launch the BIOSRenamer.exe
application to automatically rename the file. The name of the CAP file varies depending on models. Refer to the user manual that came with your motherboard for the name.
• The screenshots in this manual are for reference only, please refer to the latest BIOS version for settings and options.
• BIOS settings and options may vary due to different BIOS release versions or CPU installed. Please refer to the latest BIOS version for settings and options.
ROG Z790 Series BIOS Manual 5
6
2. BIOS setup program
Use the BIOS Setup to update the BIOS or configure its parameters. The BIOS screen include navigation keys and brief onscreen help to guide you in using the BIOS Setup program.
Entering BIOS at startup
To enter BIOS Setup at startup, press <Delete> or <F2> during the Power-On Self Test
(POST). If you do not press <Delete> or <F2>, POST continues with its routines.
Entering BIOS Setup after POST
To enter BIOS Setup after POST:
• Press <Ctrl>+<Alt>+<Delete> simultaneously.
• Press the reset button on the system chassis.
• Press the power button to turn the system off then back on. Do this option only if you failed to enter BIOS Setup using the first two options.
After doing either of the three options, press <Delete> key to enter BIOS.
• The BIOS setup screens shown in this section are for reference purposes only, and may not exactly match what you see on your screen.
• Ensure that a USB mouse is connected to your motherboard if you want to use the mouse to control the BIOS setup program.
• If the system becomes unstable after changing any BIOS setting, load the default settings to ensure system compatibility and stability. Select the Load Optimized
Defaults item under the Exit menu or press hotkey <F5> . See section Exit menu for details.
• If the system fails to boot after changing any BIOS setting, try to clear the CMOS and reset the motherboard to the default value. See your motherboard manual for information on how to erase the RTC RAM.
• The BIOS setup program does not support Bluetooth devices.
BIOS menu screen
The BIOS Setup program can be used under two modes: EZ Mode and Advanced Mode .
You can change modes from Setup Mode in Boot menu or by pressing the <F7> hotkey.
The BIOS settings and options for each motherboard may differ slightly with the options in this manual. Please refer to the BIOS of your motherboard for the settings and options.
ROG Z790 Series BIOS Manual
2.1 Advanced Mode
The Advanced Mode provides advanced options for experienced end-users to configure the BIOS settings. The figure below shows an example of the Advanced Mode. Refer to the following sections for the detailed configurations.
The default screen for entering the BIOS setup program can be changed. Refer to the
Setup Mode item in section Boot menu for details.
Configuration fields
Pop-up Menu
Menu bar
Language MyFavorite
AI OC Guide
Qfan Control Search
AURA Scroll bar
ReSize BAR MemTest86
Submenu items
Menu items
General help Last modified settings Go back to EZ Mode
Hot keys
Displays a quick overview of the system status and prediction
ROG Z790 Series BIOS Manual 7
8
Menu bar
The menu bar on top of the screen has the following main items:
My Favorites
Main
For saving the frequently-used system settings and configuration.
For changing the basic system configuration
Extreme Tweaker For changing the overclocking settings
Advanced
Monitor
Boot
Tool
Exit
For changing the advanced system settings
For displaying the system temperature, power status, and changing the fan settings.
For changing the system boot configuration
For configuring options for special functions
For selecting the exit options and loading default settings
Menu items
The highlighted item on the menu bar displays the specific items for that menu. For example, selecting Main shows the Main menu items.
The other items on the menu bar have their respective menu items.
Submenu items
An arrow sign (>) before each item on any menu screen means that the item has a submenu. To display the submenu, select the item and press <Enter>.
Language
This button above the menu bar contains the languages that you can select for your BIOS.
Click this button to select the language that you want to display in your BIOS screen.
MyFavorite
This button above the menu bar shows all BIOS items in a Tree Map setup. Select frequently-used BIOS settings and save it to My Favorites menu. You may also access this item by pressing the <F3> key on the keyboard.
Refer to section My Favorites for more information.
Qfan Control
This button above the menu bar displays the current settings of your fans. Use this button to manually tweak the fans to your desired settings. You may also access this item by pressing the <F6> key on the keyboard.
Refer to section Qfan Control for more information.
ROG Z790 Series BIOS Manual
AI OC Guide
This button above the menu bar allows you to view the descriptions of AI overclocking and enable it. You may also access this item by pressing the <F11> key on the keyboard.
• Refer to section AI OC Guide for more information.
• This function is only enabled when using an unlocked CPU.
Search
This button allows you to search for BIOS items by entering its name, enter the item name to find the related item listing. You may also access this item by pressing the <F9> key on the keyboard.
AURA
This button allows you to turn the RGB LED lighting or functional LED on or off. You may also access this item by pressing the <F4> key on the keyboard.
[All On]: All LEDs (Aura or Functional) will be enabled.
[Stealth Mode]: All LEDs (Aura and Functional) will be disabled.
[Aura Only]: Aura LEDs will be enabled and functional LEDs will be disabled.
[Aura Off]: Aura LEDs will be disabled, however functional LEDs will still be enabled.
ReSize BAR
This button allows you to turn ReSize BAR function on or off.
[On] Enable ReSize BAR support to fully harness GPU memory. CSM
(Compatibility Support Module) will be disabled.
[Off] ReSize BAR support will be disabled.
MemTest86
This button above the menu bar allows you to activate MemTest86. MemTest86 can be used to scan and detect if there are problems with your memory. For more information on using MemTest86, please refer to www.asus.com/support.
• Please save all changes made before using MemTest86.
• There will be a few seconds of loading time after clicking the MemTest86 button.
Hot keys
This button at the bottom right contains the navigation keys for the BIOS setup program. Use the navigation keys to select items in the menu and change the settings.
Scroll bar
A scroll bar appears on the right side of a menu screen when there are items that do not fit on the screen. Press the Up/Down arrow keys or <Page Up> / <Page Down> keys to display the other items on the screen.
General help
At the bottom of the menu screen is a brief description of the selected item. Use <F12> key to capture the BIOS screen and save it to the removable storage device.
ROG Z790 Series BIOS Manual 9
Configuration fields
These fields show the values for the menu items. If an item is user-configurable, you can change the value of the field opposite the item. You cannot select an item that is not userconfigurable.
A configurable field is highlighted when selected. To change the value of a field, select it and press <Enter> to display a list of options.
Last Modified button
This button shows the items that you last modified and saved in BIOS Setup.
10 ROG Z790 Series BIOS Manual
2.2 EZ Mode
The EZ Mode provides you an overview of the basic system information, and allows you to select the display language, system performance, mode and boot device priority. To access the Advanced Mode, select Advanced Mode(F7) or press the <F7> hotkey for the advanced
BIOS settings.
To switch from Advanced Mode to EZ Mode, click EZ Mode(F7) or press the <F7> hotkey.
Displays a quick overview of the system status
Selects the display language of the BIOS setup program Search
AI OC Guide AURA
Displays the system properties of the selected mode.
Click < or > to switch modes
ReSize BAR
MemTest86
Enables or disables the SATA RAID mode for Intel Rapid Storage Technology
Displays the CPU Fan’s speed. Click the button to manually tune the fans
Loads optimized default settings
Saves the changes and resets the system
Click to go to Advanced mode
Click to display boot devices
Selects the boot device priority
The boot device options vary depending on the devices you installed to the system.
ROG Z790 Series BIOS Manual 11
2.3 Qfan Control
The Qfan Control allows you to set a fan profile or manually configure the operating speed of your CPU and chassis fans.
Click to select a fan to be configured Click to activate PWM Mode
Click to activate DC Mode
Select a profile to apply to your fans
Click to apply the fan setting
Click to undo the changes
Click to go back to main menu
Select to manually configure your fans
12 ROG Z790 Series BIOS Manual
Configuring fans manually
Select Manual from the list of profiles to manually configure your fans’ operating speed.
Speed points Select to manually configure your fans
To configure your fans:
1. Select the fan that you want to configure and to view its current status.
2. Click and drag the speed points to adjust the fans’ operating speed.
3. Click to save the changes then click Exit (ESC) .
ROG Z790 Series BIOS Manual 13
2.4 AI OC Guide
• The screenshot shown in this section is for reference purposes only, and may not exactly match what you see on your screen.
• This function is only enabled when using an unlocked CPU.
• This function is only available on selected models.
The AI OC Guide allows you to enable the Ai Overclocking feature, or view a quick guide of the Ai Overclocking feature which highlights the recommended setup procedure and descriptions of the AI Overclocking.
Clicking on Enable AI will enable AI Overclocking.
14
Quick guide topics Click to view the previous topic in the quick guide
Click to view the next topic in the quick guide
Click to enable AI
Overclocking
Click to go back to main menu
ROG Z790 Series BIOS Manual
3. My Favorites
My Favorites is your personal space where you can easily save and access your favorite
BIOS items. You can personalize this screen by adding or removing items.
ROG Z790 Series BIOS Manual 15
16
Adding items to My Favorites
To add BIOS items:
1. Press <F3> on your keyboard or click MyFavorite from the BIOS screen to open
Setup Tree Map screen.
2. On the Setup Tree Map screen, select the BIOS items that you want to save in My
Favorites screen.
Main menu panel
Selected shortcut items
Submenu panel
Delete all favorite items
Recover to default favorite items
3. Select an item from main menu panel, then click the submenu that you want to save as favorite from the submenu panel and click or press <Enter> on your keyboard.
You cannot add the following items to My Favorite items:
• Items with submenu options.
• User-managed items such as language and boot order.
• Configuration items such as Memory SPD Information, system time and date.
4. Click or press <Esc> key to close Setup Tree Map screen.
5. Go to My Favorites menu to view the saved BIOS items.
ROG Z790 Series BIOS Manual
4. Main menu
The Main menu screen appears when you enter the Advanced Mode of the BIOS Setup program. The Main menu provides you an overview of the basic system information, and allows you to set the system date, time, language, and security settings.
Security
The Security menu items allow you to change the system security settings.
ROG Z790 Series BIOS Manual 17
• If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC)
RAM to clear the BIOS password. See the motherboard for information on how to erase the RTC RAM.
• The Administrator or User Password items on top of the screen show the default [Not
Installed] . After you set a password, these items show [Installed] .
Administrator Password
If you have set an administrator password, we recommend that you enter the administrator password for accessing the system. Otherwise, you might be able to see or change only selected fields in the BIOS setup program.
To set an administrator password:
1. Select the Administrator Password item and press <Enter>.
2. From the Create New Password box, key in a password, then press <Enter>.
3. Re-type to confirm the password then select OK .
To change an administrator password:
1. Select the Administrator Password item and press <Enter>.
2. From the Enter Current Password box, key in the current password, then press
<Enter>.
3. From the Create New Password box, key in a new password, then press <Enter>.
4. Re-type to confirm the password then select OK .
To clear the administrator password, follow the same steps as in changing an administrator password, but leave other fields blank then select OK to continue. After you clear the password, the Administrator Password item on top of the screen shows [Not Installed] .
18
User Password
If you have set a user password, you must enter the user password for accessing the system. The User Password item on top of the screen shows the default [Not Installed] .
After you set a password, this item shows [Installed] .
To set a user password:
1. Select the User Password item and press <Enter>.
2. From the Create New Password box, key in a password, then press <Enter>.
3. Re-type to confirm the password then select OK .
To change a user password:
1. Select the User Password item and press <Enter>.
2. From the Enter Current Password box, key in the current password, then press
<Enter>.
3. From the Create New Password box, key in a new password, then press <Enter>.
4. Re-type to confirm the password then select OK .
To clear the user password, follow the same steps as in changing a user password, but leave other fields blank then select OK to continue. After you clear the password, the User
Password item on top of the screen shows [Not Installed] .
ROG Z790 Series BIOS Manual
5. Extreme Tweaker menu
The Extreme Tweaker menu items allow you to configure overclocking-related items.
Be cautious when changing the settings of the Extreme Tweaker menu items. Incorrect field values can cause the system to malfunction.
The configuration options for this section vary depending on the CPU and DIMM model you installed on the motherboard.
Scroll down to display other BIOS items.
Ai Overclock Tuner
[Auto]
[Manual]
[AEMP II]
[XMP I]
[XMP II]
Loads the optimal settings for the system.
When the manual mode is selected, the BCLK (base clock) frequency can be assigned manually.
Loads the memory parameters profile optimized if no DIMM profiles are detected.
Load the DIMM’s default XMP memory timings (CL, TRCD, TRP, TRAS) and other memory parameters optimized by ASUS.
Load the DIMM’s complete default XMP profile.
The configuration options for this item vary depending on the DIMM model you installed on the motherboard.
ROG Z790 Series BIOS Manual 19
20
The following item appears only when Ai Overclock Tuner is set to [Manual] , [AEMP II] ,
[XMP I] , or [XMP II] .
BCLK Frequency
Using a higher BCLK frequency will alter the operating frequency of all associated clock domains (CPU, DRAM, and Cache). Use the <+> or <-> to adjust the value.
We recommend you to set the value based on the CPU specification, as high BCLK frequencies may damage the CPU permanently.
PCIE Frequency
Use the <+> or <-> to adjust the value. The values range from 80 MHz to 200 MHz with an interval of 0.1 MHz.
Configuration options: [Auto] [80.0] - [200.0]
The following item appears only when Ai Overclock Tuner is set to [AEMP II] .
AEMP
Allows you to select your ASUS Enhanced Memory Profile (AEMP). Each profile has its own
DRAM frequency, timing and voltage.
The following item appears only when Ai Overclock Tuner is set to [XMP I] or [XMP II] .
XMP
Allows you to select your Extreme Memory Profile. Each profile has its own DRAM frequency, timing and voltage.
Intel(R) Adaptive Boost Technology
Allows you to enable or disable IABT to improve performance by allowing higher multi-core turbo frequencies. Operating within system power and temperature specifications when current, power and thermal headroom exists, please ensure quality cooling for the CPU before enabling the ABT function.
Configuration options: [Auto] [Disabled] [Enabled]
ASUS MultiCore Enhancement
[Auto - Lets BIOS Optimize]
[Disabled - Enforce All limits]
[Enabled - Remove All limits]
[Enabled - Remove All limits (90°C)]
This item allows you to use ASUS optimized core ratio Turbo settings at default processor speeds.
This item allows you to use Intel default Turbo core ratio settings.
This item allows you to use optimized power and current thresholds for maintaining maximum performance.
This item allows you to use optimized power and current thresholds for maintaining maximum performance.
ROG Z790 Series BIOS Manual
SVID Behavior
Allows you to program the CPU’s SVID behavior based on the CPU’s quality. The default option is based on [Typical Scenario] , but the more optimistic the mode selected, the lower the temperature of the CPU. [Intel’s Fail Safe] is the default behavior of the processor oblivious to the actual Motherboard design. [Trained] optimizes SVID behavior to match input parameters such as VRM Loadline and Target Frequencies.
Configuration options: [Auto] [Best-Case Scenario] [Typical Scenario] [Worst-Case Scenario]
[Intel’s Fail Safe] [Trained]
BCLK Frequency : DRAM Frequency Ratio
[Auto]
[100:133]
[100:100]
The BCLK frequency to DRAM frequency ratio will be set to the optimized setting.
The BCLK frequency to DRAM frequency ratio will be set to 100:133.
The BCLK frequency to DRAM frequency ratio will be set to 100:100.
Memory Controller : DRAM Frequency Ratio
BCLK Frequency: DRAM Frequency Ratio of 100:133 tends to overclock better and 1:2
Memory Controller: DRAM Frequency Ratio only works with even numbered DRAM Ratios and not odd numbered ratios.
Configuration options: [Auto] [1:1] [1:2] [1:4]
DRAM Frequency
Allows you to set the memory operating frequency. The configurable options vary with the
BCLK (base clock) frequency setting. Select the auto mode to apply the optimized setting.
The configuration options for this item vary depending on the DIMM model you installed on the motherboard.
The frequency ratios in grey are not recommended, use BCLK + ratios in white to reach your target frequency if needed.
Performance Core Ratio
[Auto] The system will adjust all Performance core ratios automatically.
[Sync All Cores] Configure a core ratio limit to synchronize all Performance cores.
[By Core Usage] Configure the ratio limits for active cores depending on how many
Performance cores are being utilized.
[AI Optimized] Use AI to optimize the Performance core ratios.
• The item appears only when you use an unlocked CPU.
• The following item appears only when Performance Core Ratio is set to [Sync All
Cores] .
ALL-Core Ratio Limit
Enter [Auto] to apply the CPU default Turbo Ratio setting or manually assign a Core ratio limit to synchronize all cores. Use the <+> or <-> to adjust the value.
Configuration options: [Auto] [8] - [85]
ROG Z790 Series BIOS Manual 21
22
The following items appear only when Performance Core Ratio is set to [By Core
Usage] .
1-Core Ratio Limit / 2-Core Ratio Limit / 3-Core Ratio Limit / 4-Core Ratio
Limit / 5-Core Ratio Limit / 6-Core Ratio Limit
The N-core ratio limit must be higher than or equal to the (N+1)-core ratio limit. (N stands for the number of CPU cores) The core ratio limit cannot be set to [Auto] when the core number is lower than N. The biggest core’s ratio limit must be lower than or equal to the second biggest core’s ratio limit. Use the <+> or <-> to adjust the value.
Configuration options: [Auto] [36] - [85]
The following item appears only when Performance Core Ratio is set to [AI Optimized] .
Optimized AVX Frequency
Select [Normal Use] for typical use cases, or select [Heavy AVX] for extreme loads such as
Prime 95 AVX.
Configuration options: [Normal Use] [Heavy AVX]
The following items appear only when Performance Core Ratio is set to [Auto] , [Sync
All Cores] or [By Core Usage] .
Specific Performance Core
Performance Core0-5 Specific Ratio Limit
Configure a ratio limit for certain Performance Cores. Use the <+> or <-> to adjust the value.
Configuration options: [Auto] [8] - [85]
Performance Core0-5 specific Voltage
Allows configuration of the voltage supply to the CPU cores. Setting to [Auto] will scale voltage according to the applied CPU core ratio. Do not confuse this setting with
VCCIN (CPU Input voltage).
Configuration options: [Auto] [Manual Mode] [Adaptive Mode]
The following item appears only when Performance Core0-5 specific Voltage is set to
[Manual Mode] .
CPU Core-0-5 Voltage Override
Allows configuration of the CPU core voltage. Use the <+> or <-> to adjust the value.
The values range from 0.600V to 1.700V with an interval of 0.001V.
Configuration options: [Auto] [0.00600] - [1.70000]
You need to save the changes and reset the system for the changes to take effect.
ROG Z790 Series BIOS Manual
The following items appear only when Performance Core0-5 specific Voltage is set to
[Adaptive Mode] .
Offset Mode Sign
[+] Offset the CPU core voltage by a positive value.
[-] Offset the CPU core voltage by a negative value.
Additional Turbo Mode CPU Core0-5 Voltage
Configure the amount of voltage fed to the CPU cores when running in the turbo mode. Increase the voltage when configuring a High CPU core frequency. This voltage will be affected by the offset value. Use the <+> or <-> to adjust the value. The values range from 0.001V to 1.920V with an interval of 0.001V.
Configuration options: [Auto] [0.00100] - [1.92000]
Performance Core0-5 Offset
Configure the CPU core voltage offset value. Use the <+> or <-> to adjust the value.
The values range from 0.001 V to 0.999 V with an interval of 0.001 V.
Configuration options: [Auto] [0.00100] - [0.99900]
You need to save the changes and reset the system for the changes to take effect.
Efficient Core Ratio
[Auto] The system will adjust all Efficient core ratios automatically.
[Sync All Cores] Configure a core ratio limit to synchronize all Efficient cores.
[By Core Usage] Configure the ratio limits for active cores depending on how many Efficient cores are being utilized.
[AI Optimized] Use AI to optimize the Efficient core ratios.
• The item appears only when you use an unlocked CPU.
• The following item appears only when Efficient Core Ratio is set to [Sync All
Cores] .
ALL-Core Ratio Limit
Ratio Limit for Efficient Cores when N Efficient cores are loaded. Use the <+> or <-> to adjust the value.
Configuration options: [Auto] [8] - [85]
The following items appear only when Efficient Core Ratio is set to [By Core Usage] .
Efficient 1-Core Ratio Limit / Efficient 2-Core Ratio Limit / Efficient 3-Core
Ratio Limit / Efficient 4-Core Ratio Limit / Efficient 5-Core Ratio Limit /
Efficient 6-Core Ratio Limit / Efficient 7-Core Ratio Limit / Efficient 8-Core
Ratio Limit
Ratio Limit for Efficient cores when N Efficient cores are loaded. Use the <+> or <-> to adjust the value.
Configuration options: [Auto] [26] - [85]
ROG Z790 Series BIOS Manual 23
24
The following items appear only when Efficient Core Ratio is set to [Auto] , [Sync All
Cores] or [By Core Usage] .
Specific Efficient Core
Efficient Core Group0-1 Specific Ratio Limit
Configure a ratio limit for certain Efficient Cores. Use the <+> or <-> to adjust the value.
Configuration options: [Auto] [8] - [120]
Efficient Core Group0-1 specific Voltage
Allows configuration of the voltage supply to the CPU cores. Setting to [Auto] will scale voltage according to the applied CPU core ratio. Do not confuse this setting with
VCCIN (CPU Input voltage).
Configuration options: [Auto] [Manual Mode] [Adaptive Mode]
The following item appears only when Efficient Core Group0-1 specific Voltage is set to
[Manual Mode] .
CPU Core-0 Voltage Override / CPU Core-1 Voltage Override
Allows configuration of the CPU core voltage offset value. Use the <+> or <-> to adjust the value. The values range from 0.600V to 1.700V with an interval of 0.001V.
Configuration options: [Auto] [0.00600] - [1.70000]
• You need to save the changes and reset the system for the changes to take effect.
• The following items appear only when Efficient Core Group0 specific Voltage /
Efficient Core Group1 specific Voltage is set to [Adaptive Mode] .
Offset Mode Sign
[+] Offset the CPU core voltage by a positive value.
[-] Offset the CPU core voltage by a negative value.
Additional Turbo Mode Efficient Group0-1 Voltage
Configure the amount of voltage fed to the CPU cores when running in the turbo mode. Increase the voltage when configuring a High CPU core frequency. This voltage will be affected by the offset value. Use the <+> or <-> to adjust the value. The values range from 0.001 V to 1.920 V with an interval of 0.001 V.
Configuration options: [Auto] [0.00100] - [1.92000]
Efficient Core Group0-1 Offset
Configure the CPU core voltage offset value. Use the <+> or <-> to adjust the value.
The values range from 0.001 V to 0.999 V with an interval of 0.001 V.
Configuration options: [Auto] [0.00100] - [0.99900]
You need to save the changes and reset the system for the changes to take effect.
AVX Related Controls
AVX2
Allows you to enable or disable the AVX 2 Instructions.
Configuration options: [Auto] [Disabled] [Enabled]
ROG Z790 Series BIOS Manual
AVX2 Ratio Offset to per-core Ratio Limit
Configuration options: [Auto] [User Specify]
The following item appears only when AVX2 Ratio Offset to per-core Ratio Limit is set to [User Specify] .
AVX2 Ratio Offset
Specifies number of bins to decrease AVX ratio vs. Per-Core Ratio. AVX is a more stressful workload, it is helpful to lower the AVX ratio to ensure maximum possible ratio for SSE workloads. Uses Mailbox MSR 0x150, cmd 0x1B. Range 0-31. 0=No offset. Use the <+> or <-> to adjust the value.
Configuration options: [0] - [31]
AVX2 Voltage Guardband Scale Factor
Configuration options: [Auto] [User Specify]
The following item appears only when AVX2 Voltage Guardband Scale Factor is set to
[User Specify] .
AVX2 Voltage Guardband Scale Factor
Controls the voltage guardband applied to AVX workloads. Range in 1/100 units, where 125=1.25 scale factor. The resulting final voltage guardband is default guardband * Scale Factor. Therefore lower than 100 values reduce guardband while higher than 100 values increase guardband. Use the <+> or <-> to adjust the value.
Configuration options: [0] - [199]
DRAM Timing Control
The sub-items in this menu allow you to set the DRAM timing control features. Use the
<+> and <-> keys to adjust the value. To restore the default setting, type [Auto] using the keyboard and press the <Enter> key. You can also select various Memory Presets to load settings suitably tuned for some memory modules.
Changing the values in this menu may cause the system to become unstable! If this happens, revert to the default settings.
Maximus Tweak
Configuration options: [Auto] [Mode 1] [Mode 2]
Primary Timings
DRAM CAS# Latency
Configuration options: [Auto] [2] - [126]
DRAM RAS# to CAS# Delay
Configuration options: [Auto] [0] - [255]
DRAM RAS# PRE Time
Configuration options: [Auto] [0] - [255]
DRAM RAS# ACT Time
Configuration options: [Auto] [1] - [511]
ROG Z790 Series BIOS Manual 25
26
DRAM Command Rate
Configuration options: [Auto] [1N] [2N] [3N] [N:1]
The following item appears only when DRAM Command Rate is set to [N:1] .
N to 1 ratio
Number of bubbles between each valid command cycle.
Configurations: [1] - [7]
Secondary Timings
DRAM RAS# to RAS# Delay L
Configuration options: [Auto] [1] - [63]
DRAM RAS# to RAS# Delay S
Configuration options: [Auto] [1] - [127]
DRAM REF Cycle Time
Configuration options: [Auto] [1] - [65535]
DRAM REF Cycle Time 2
Configuration options: [Auto] [1] - [65535]
DRAM REF Cycle Time Same Bank
Configuration options: [Auto] [0] - [2047]
DRAM Refresh Interval
Configuration options: [Auto] [1] - [262143]
DRAM WRITE Recovery Time
Configuration options: [Auto] [1] - [234]
DRAM READ to PRE Time
Configuration options: [Auto] [1] - [255]
DRAM FOUR ACT WIN Time
Configuration options: [Auto] [1] - [511]
DRAM WRITE to READ Delay
Configuration options: [Auto] [1] - [31]
DRAM WRITE to READ Delay L
Configuration options: [Auto] [1] - [31]
DRAM WRITE to READ Delay S
Configuration options: [Auto] [1] - [31]
DRAM CKE Minimum Pulse Width
Configuration options: [Auto] [0] - [127]
DRAM Write Latency
Configuration options: [Auto] [1] - [255]
Skew Control
DDRCRCOMPCTL0/1/2
Ctl0 dqvrefup
Configuration options: [Auto] [0] - [255]
ROG Z790 Series BIOS Manual
Ctl0 dqvrefdn
Configuration options: [Auto] [0] - [255]
Ctl0 dqodtvrefup
Configuration options: [Auto] [0] - [255]
Ctl0 dqodtvrefdn
Configuration options: [Auto] [0] - [255]
Ctl1 cmdvrefup
Configuration options: [Auto] [0] - [255]
Ctl1 ctlvrefup
Configuration options: [Auto] [0] - [255]
Ctl1 clkvrefup
Configuration options: [Auto] [0] - [255]
Ctl1 ckecsvrefup
Configuration options: [Auto] [0] - [255]
Ctl2 cmdvrefdn
Configuration options: [Auto] [0] - [255]
Ctl2 ctlvrefdn
Configuration options: [Auto] [0] - [255]
Ctl2 clkvrefdn
Configuration options: [Auto] [0] - [255]
Tc Odt Control
ODT_READ_DURATION
Configuration options: [Auto] [0] - [15]
ODT_READ_DELAY
Configuration options: [Auto] [0] - [7]
ODT_WRITE_DURATION
Configuration options: [Auto] [0] - [7]
ODT_WRITE_DELAY
Configuration options: [Auto] [0] - [7]
MC0 Dimm0 / MC0 Dimm1 / MC1 Dimm0 / MC1 Dimm1
DQ RTT WR
Configuration options: [Auto] [0 DRAM Clock] [34 DRAM Clock] [40 DRAM Clock] [48
DRAM Clock] [60 DRAM Clock] [80 DRAM Clock] [120 DRAM Clock] [240 DRAM Clock]
DQ RTT NOM RD
Configuration options: [Auto] [0 DRAM Clock] [34 DRAM Clock] [40 DRAM Clock] [48
DRAM Clock] [60 DRAM Clock] [80 DRAM Clock] [120 DRAM Clock] [240 DRAM Clock]
DQ RTT NOM WR
Configuration options: [Auto] [0 DRAM Clock] [34 DRAM Clock] [40 DRAM Clock] [48
DRAM Clock] [60 DRAM Clock] [80 DRAM Clock] [120 DRAM Clock] [240 DRAM Clock]
DQ RTT PARK
Configuration options: [Auto] [0 DRAM Clock] [34 DRAM Clock] [40 DRAM Clock] [48
DRAM Clock] [60 DRAM Clock] [80 DRAM Clock] [120 DRAM Clock] [240 DRAM Clock]
DQ RTT PARK DQS
Configuration options: [Auto] [0 DRAM Clock] [34 DRAM Clock] [40 DRAM Clock] [48
DRAM Clock] [60 DRAM Clock] [80 DRAM Clock] [120 DRAM Clock] [240 DRAM Clock]
ROG Z790 Series BIOS Manual 27
28
GroupA CA ODT
Configuration options: [Auto] [0 DRAM Clock] [40 DRAM Clock] [60 DRAM Clock] [80
DRAM Clock] [120 DRAM Clock] [240 xDRAM Clock] [480 DRAM Clock]
GroupA CS ODT
Configuration options: [Auto] [0 DRAM Clock] [40 DRAM Clock] [60 DRAM Clock] [80
DRAM Clock] [120 DRAM Clock] [240 DRAM Clock] [480 DRAM Clock]
GroupA CK ODT
Configuration options: [Auto] [0 DRAM Clock] [40 DRAM Clock] [60 DRAM Clock] [80
DRAM Clock] [120 DRAM Clock] [240 DRAM Clock] [480 DRAM Clock]
GroupB CA ODT
Configuration options: [Auto] [0 DRAM Clock] [40 DRAM Clock] [60 DRAM Clock] [80
DRAM Clock] [120 DRAM Clock] [240 DRAM Clock] [480 DRAM Clock]
GroupB CS ODT
Configuration options: [Auto] [0 DRAM Clock] [40 DRAM Clock] [60 DRAM Clock] [80
DRAM Clock] [120 DRAM Clock] [240 DRAM Clock] [480 DRAM Clock]
GroupB CK ODT
Configuration options: [Auto] [0 DRAM Clock] [40 DRAM Clock] [60 DRAM Clock] [80
DRAM Clock] [120 DRAM Clock] [240 DRAM Clock] [480 DRAM Clock]
Pull-up Output Driver Impedance
Configuration options: [Auto] [34 DRAM Clock] [40 DRAM Clock] [48 DRAM Clock]
Pull-Down Output Driver Impedance
Configuration options: [Auto] [34 DRAM Clock] [40 DRAM Clock] [48 DRAM Clock]
RTL IOL Control
Round Trip Latency Init Value MC0-1 CHA-B
Configuration options: [Auto] [0] - [255]
Round Trip Latency Max Value MC0-1 CHA-B
Configuration options: [Auto] [0] - [255]
Round Trip Latency Offset Value Mode Sign MC0-1 CHA-B
Configuration options: [-] [+]
Round Trip Latency Offset Value MC0-1 CHA-B
Configuration options: [Auto] [0] - [255]
Round Trip Latency MC0-1 CHA-B R0-7
Configuration options: [Auto] [0] - [255]
Memory Training Algorithms
The items in this menu allows you to enable or disable different Memory Training
Algorithms.
Early Command Training
Configuration options: [Auto] [Enabled] [Disabled]
SenseAmp Offset Training
Configuration options: [Auto] [Enabled] [Disabled]
Early ReadMPR Timing Centering 2D
Configuration options: [Auto] [Enabled] [Disabled]
Read MPR Training
Configuration options: [Auto] [Enabled] [Disabled]
ROG Z790 Series BIOS Manual
Receive Enable Training
Configuration options: [Auto] [Enabled] [Disabled]
Jedec Write Leveling
Configuration options: [Auto] [Enabled] [Disabled]
Early Write Timing Centering 2D
Configuration options: [Auto] [Disabled] [Enabled]
Early Read Timing Centering 2D
Configuration options: [Auto] [Disabled] [Enabled]
Write Timing Centering 1D
Configuration options: [Disabled] [Enabled]
Write Voltage Centering 1D
Configuration options: [Auto] [Disabled] [Enabled]
Read Timing Centering 1D
Configuration options: [Auto] [Disabled] [Enabled]
Read Timing Centering with JR
Configuration options: [Auto] [Disabled] [Enabled]
Dimm ODT Training*
Configuration options: [Auto] [Disabled] [Enabled]
Max RTT_WR
Allows you to cap the maximum RTT_WR in power training.
Configuration options: [ODT OFF] [120 Ohms]
DIMM RON Training*
Configuration options: [Auto] [Disabled] [Enabled]
Write Drive Strength/Equalization 2D*
Configuration options: [Auto] [Disabled] [Enabled]
Write Slew Rate Training*
Configuration options: [Auto] [Disabled] [Enabled]
Read ODT Training*
Configuration options: [Auto] [Disabled] [Enabled]
Comp Optimization Traning
Configuration options: [Auto] [Disabled] [Enabled]
Read Equalization Training*
Configuration options: [Auto] [Disabled] [Enabled]
Read Amplifier Training*
Configuration options: [Auto] [Disabled] [Enabled]
Write Timing Centering 2D
Configuration options: [Auto] [Disabled] [Enabled]
Read Timing Centering 2D
Configuration options: [Auto] [Disabled] [Enabled]
Command Voltage Centering
Configuration options: [Auto] [Disabled] [Enabled]
Early Command Voltage Centering
Configuration options: [Auto] [Disabled] [Enabled]
ROG Z790 Series BIOS Manual 29
30
Write Voltage Centering 2D
Configuration options: [Auto] [Disabled] [Enabled]
Read Voltage Centering 2D
Configuration options: [Auto] [Disabled] [Enabled]
Late Command Training
Configuration options: [Disabled] [Enabled] [Auto]
Round Trip Latency
Configuration options: [Auto] [Disabled] [Enabled]
Turn Around Timing Training
Configuration options: [Auto] [Disabled] [Enabled]
CMD CTL CLK Slew Rate
Configuration options: [Auto] [Disabled] [Enabled]
CMD/CTL DS & E 2D
Configuration options: [Auto] [Disabled] [Enabled]
Read Voltage Centering 1D
Configuration options: [Auto] [Disabled] [Enabled]
TxDqTCO Comp Training*
Configuration options: [Auto] [Disabled] [Enabled]
ClkTCO Comp Training*
Configuration options: [Auto] [Disabled] [Enabled]
TxDqsTCO Comp Training*
Configuration options: [Auto] [Disabled] [Enabled]
VccDLL Bypass Training*
Configuration options: [Auto] [Disabled] [Enabled]
CMD/CTL Drive Strength Up/Dn 2D
Configuration options: [Auto] [Disabled] [Enabled]
DIMM CA ODT Training
Configuration options: [Auto] [Disabled] [Enabled]
PanicVttDnLp Training*
Configuration options: [Auto] [Disabled] [Enabled]
Read Vref Decap Traning*
Configuration options: [Auto] [Disabled] [Enabled]
Vddq Training
Configuration options: [Auto] [Disabled] [Enabled]
Duty Cycle Correction Training
Configuration options: [Auto] [Disabled] [Enabled]
Rank Margin Tool Per Bit
Configuration options: [Auto] [Disabled] [Enabled]
DIMM DFE Training
Configuration options: [Auto] [Disabled] [Enabled]
EARLY DIMM DFE Training
Configuration options: [Auto] [Disabled] [Enabled]
ROG Z790 Series BIOS Manual
Tx Dqs Dcc Training
Configuration options: [Auto] [Disabled] [Enabled]
DRAM DCA Training
Configuration options: [Auto] [Disabled] [Enabled]
Write Driver Strength Training
Configuration options: [Auto] [Disabled] [Enabled]
Rank Margin Tool
Configuration options: [Auto] [Disabled] [Enabled]
Memory Test
Configuration options: [Auto] [Disabled] [Enabled]
DIMM SPD Alias Test
Configuration options: [Auto] [Disabled] [Enabled]
Receive Enable Centering 1D
Configuration options: [Auto] [Disabled] [Enabled]
Retrain Margin Check
Configuration options: [Auto] [Disabled] [Enabled]
Write Drive Strength Up/Dn independently
Configuration options: [Auto] [Disabled] [Enabled]
Margin Check Limit
Checks Margin to Limit to see if next boot memory needs to be retrained.
Configuration options: [Disabled] [L1] [L2] [Both]
The following item appears only when Margin Check Limit is set to [L2] or [Both] .
Margin Limit Check L2
L2 check threshold is scale of L1 check.
Configuration options: [1] - [300]
Third Timings tRDRD_sg_Training
Configuration options: [Auto] [0] - [127] tRDRD_sg_Runtime
Configuration options: [Auto] [0] - [127] tRDRD_dg_Training
Configuration options: [Auto] [0] - [127] tRDRD_dg_Runtime
Configuration options: [Auto] [0] - [127] tRDWR_sg
Configuration options: [Auto] [0] - [255] tRDWR_dg
Configuration options: [Auto] [0] - [255] tWRWR_sg
Configuration options: [Auto] [0] - [127]
ROG Z790 Series BIOS Manual 31
32 tWRWR_dg
Configuration options: [Auto] [0] - [127] tWRRD_sg
Configuration options: [Auto] [0] - [511] tWRRD_dg
Configuration options: [Auto] [0] - [511] tRDRD_dr
Configuration options: [Auto] [0] - [255] tRDRD_dd
Configuration options: [Auto] [0] - [255] tRDWR_dr
Configuration options: [Auto] [0] - [255] tRDWR_dd
Configuration options: [Auto] [0] - [255] tWRWR_dr
Configuration options: [Auto] [0] - [127] tWRWR_dd
Configuration options: [Auto] [0] - [255] tWRRD_dr
Configuration options: [Auto] [0] - [127] tWRRD_dd
Configuration options: [Auto] [0] - [127] tRPRE
Configuration options: [Auto] [0] - [4] tWPRE
Configuration options: [Auto] [0] - [4] tWRPRE
Configuration options: [Auto] [0] - [1023] tPRPDEN
Configuration options: [Auto] [0] - [31] tRDPDEN
Configuration options: [Auto] [0] - [255] tWRPDEN
Configuration options: [Auto] [0] - [1023] tCPDED
Configuration options: [Auto] [0] - [31] tREFIX9
Configuration options: [Auto] [0] - [255]
Ref Interval
Configuration options: [Auto] [0] - [8191]
ROG Z790 Series BIOS Manual
tXPDLL
Configuration options: [Auto] [0] - [127] tXP
Configuration options: [Auto] [0] - [127] tPPD
Configuration options: [Auto] [0] - [15] tCCD_L_tDLLK
Configuration options: [Auto] [0] - [15]
Misc.
MRC Fast Boot
Allows you to enable or disable the MRC fast boot.
Configuration options: [Disabled] [Enabled]
MCH Full Check
Enable this item to enhance the system stability. Setting this item to [Disabled] may enhance the DRAM overclocking capability.
Configuration options: [Auto] [Enabled] [Disabled]
Mem Over Clock Fail Count
Configuration options: [Auto] [1] - [255]
Training Profile
Allows you to select the DIMM training profile.
Configuration options: [Auto] [Standard Profile] [ASUS User Profile]
RxDfe
Allows you to set the DFE on SOC Rx.
Configuration options: [Auto] [Enabled] [Disabled]
Mrc Training Loop Count
Allows you to set the exponential number of loops to run the test.
Configuration options: [Auto] [0] - [32]
DRAM CLK Period
Allows you to set the DRAM clock period.
Configuration options: [Auto] [0] - [161]
Dll_bwsel
Try range of 22+ for OC.
Configuration options: [Auto] [0] - [63]
Controller 0, Channel 0 Control
Allows you to enable or disable Controller 0, Channel 0.
Configuration options: [Enabled] [Disabled]
Controller 0, Channel 1 Control
Allows you to enable or disable Controller 0, Channel 1.
Configuration options: [Enabled] [Disabled]
Controller 1, Channel 0 Control
Allows you to enable or disable Controller 1, Channel 0.
Configuration options: [Enabled] [Disabled]
ROG Z790 Series BIOS Manual 33
34
Controller 1, Channel 1 Control
Allows you to enable or disable Controller 1, Channel 1.
Configuration options: [Enabled] [Disabled]
MC_Vref0-2
Configuration options: [Auto] [0] - [65533]
Fine Granularity Refresh mode
Configuration options: [Auto] [Disabled] [Enabled]
DRAM SPD Configuration
SDRAM Density Per Die
Configuration options: [Auto] [4 Gb] [8 Gb] [12 Gb] [16 Gb] [24 Gb] [32 Gb] [48 Gb] [64
Gb]
SDRAM Banks Per Bank Group
Configuration options: [Auto] [1 bank per bank group] [2 bank per bank group] [4 bank per bank group]
SDRAM Bank Groups
Configuration options: [Auto] [1 bank group] [2 bank groups] [4 bank groups] [8 bank groups]
Configure Memory Dynamic Frequency Switching
The following item appears only when Realtime Memory Frequency is set to [Disabled] .
Dynamic Memory Boost
Allows you to enable or disable Dynamic Memory Boost Feature. Allows automatic switching between default SPD Profile frequency and selected XMP profile frequency.
Only valid if an XMP Profile is selected.
Configuration options: [Disabled] [Enabled]
The following item appears only when Dynamic Memory Boost is set to [Disabled] .
Realtime Memory Frequency
Allows you to enable or disable Memory Frequency feature. Allows manual switching between in runtime between default SPD Profile frequency and selected XMP profile frequency. Only valid if an XMP Profile is selected.
Configuration options: [Disabled] [Enabled]
SA GV
System Agent Geyserville. Can disable, fix to a specific point, or enable frequency switching. If enabled, we recommend you to leave options at parked values for best compatibility. Enabling this feature requires a longer boot time.
Configuration options: [Disabled] [Enabled] [Fixed to 1st Point] [Fixed to 2nd Point]
[Fixed to 3rd Point] [Fixed to 4th Point]
The following items appear only when SA GV is set to [Enabled] , [Fixed to 1st Point] ,
[Fixed to 2nd Point] , [Fixed to 3rd Point] , or [Fixed to 4th Point] .
First Point Frequency
Allows you to specify the frequency for the given point. 0-MRC auto, else a specific frequency as an integer: 2000Mhz.
Configuration options: [0] - [65535]
ROG Z790 Series BIOS Manual
First Point Gear
Allows you to set the gear ratio for this SAGV point. 0-Auto, 1-G1, 2-G2, 4-G4.
Configuration options: [0] - [4]
Second Point Frequency
Allows you to specify the frequency for the given point. 0-MRC auto, else a specific frequency as an integer: 2000Mhz.
Configuration options: [0] - [65535]
Second Point Gear
Allows you to set the gear ratio for this SAGV point. 0-Auto, 1-G1, 2-G2, 4-G4.
Configuration options: [0] - [4]
Third Point Frequency
Allows you to specify the frequency for the given point. 0-MRC auto, else a specific frequency as an integer: 2000Mhz.
Configuration options: [0] - [65535]
Third Point Gear
Allows you to set the gear ratio for this SAGV point. 0-Auto, 1-G1, 2-G2, 4-G4.
Configuration options: [0] - [4]
The Fourth Point Gear will always be the settings you set in the main menu, so configure the Fourth Point Gear there.
Digi+ VRM
Voltage Monitor
Configuration options: [Die Sense] [Socket Sense]
VRM Intialization Check
When any error occurs during VRM initialization, the system will hang at POST code
76/77 if this function is enabled.
Configuration options: [Disabled] [Enabled]
CPU Input Voltage Load-line Calibration
Configuration options [Auto] [Level 1] [Level 2] [Level 3]
CPU Load-line Calibration
The load-line is defined by the Intel VRM specification and affects the level of voltage supplied to the processor. Higher load-line calibration settings result in reduced
VDroop at the expense of voltage overshoot and will increase CPU temperatures due to higher voltage under load. Select from level 1 to 7 to adjust the load-line slope.
Level 1 = greater VDroop, Level 7 = minimum VDroop.
Configuration options [Auto] [Level 1] [Level 2] [Level 3] [Level 4:Recommended for
OC] [Level 5] [Level 6] [Level 7] [Level 8]
The actual performance boost may vary depending on your CPU specification.
DO NOT remove the thermal module. The thermal conditions should be monitored.
Synch ACDC Loadline with VRM Loadline
Enable this item to allow the VRM Loadline to be adjusted automatically to match the
AC/DC Loadline.
Configuration options: [Disabled] [Enabled]
ROG Z790 Series BIOS Manual 35
36
CPU Current Capability
Allows you to set the shut-off current limit for external voltage regulator. A higher setting will allow the voltage regulator to supply more current while a lower setting will cause the voltage regulator to shut off the system when the supplied current is higher than the set value.
Configuration options: [Auto] [100%] - [140%]
Configure higher values when overclocking or under a high loading for extra power support.
CPU Current Reporting
Configuration options: [Auto] [50%] [100%] [150%]
CPU Voltage Suspension
Allows you to manipulate voltage output, effective in both over-ride and non over-ride modes.
Configuration options: [Auto] [Enabled] [Disabled]
The following items appear only when CPU Voltage Suspension is set to [Enabled] .
Voltage Floor Mode
[Static] Sets a fixed minimum voltage.
[Dynamic] Sets a customized minimum that actively moves based on CPU temperature.
The following item appears only when Voltage Floor Mode is set to [Static] .
Voltage Floor
Boosts output to keep voltage above this level, efficacy up to 0.3V. Use the <+> and
<-> keys to adjust the value. The values range from 0.000V to 3.000V with an interval of 0.00625V.
Configuration options: [Auto] [0.00000] - [3.00000]
The following items appear only when Voltage Floor Mode is set to [Dynamic] .
Floor Low VMin
The lowest minimum voltage point that maps to Floor Hot Temp should the processor temperature move to hotter or equal to Floor Hot Temp. Auto is 1.15V. Use the <+> and <-> keys to adjust the value. The values range from 0.000V to 3.000V with an interval of 0.00625V.
Configuration options: [Auto] [0.00000] - [3.00000]
Floor Hot Temp
The hottest temperature point that maps to Floor Low Vmin should the processor temperature move to hotter or equal to Floor Hot Temp. Auto is 95C. Use the <+> and
<-> keys to adjust the value. The values range from 0C to 255C with an interval of 1C.
Configuration options: [Auto] [0] - [255]
ROG Z790 Series BIOS Manual
Floor High VMin
The highest minimum voltage point that maps to Floor Cold Temp should the processor temperature move to colder or equal to Floor Cold Temp. Auto is 1.30V.
Use the <+> and <-> keys to adjust the value. The values range from 0.000V to
3.000V with an interval of 0.00625V.
Configuration options: [Auto] [0.00000] - [3.00000]
Floor Cold Temp
The coldest temperature point that maps to Floor High Vmin should the processor temperature move to colder or equal to Floor Cold Temp. Auto is 55C. Use the <+> and <-> keys to adjust the value. The values range from 0C to 255C with an interval of 1C.
Configuration options: [Auto] [0] - [255]
Voltage Ceiling Mode
[Static] Sets a fixed maximum voltage.
[Dynamic] Sets a customized maximum that actively moves based on CPU temperature.
The following item appears only when Voltage Ceiling Mode is set to [Static] .
Voltage Ceiling
Suppresses output to keep voltage below this level, efficacy up to 0.3V. Use the <+> and <-> keys to adjust the value. The values range from 0.000V to 3.000V with an interval of 0.00625V.
Configuration options: [Auto] [0.00000] - [3.00000]
The following items appear only when Voltage Ceiling Mode is set to [Dynamic] .
Ceiling Low VMax
The lowest maximum voltage point that maps to Ceiling Hot Temp should the processor temperature move to hotter or equal to Ceiling Hot Temp. Auto is 1.30V.
Use the <+> and <-> keys to adjust the value. The values range from 0.000V to
3.000V with an interval of 0.00625V.
Configuration options: [Auto] [0.00000] - [3.00000]
Ceiling Hot Temp
The hottest temperature point that maps to Ceiling Low VMax should the processor temperature move to hotter or equal to Ceiling Hot Temp. Auto is 88C. Use the <+> and <-> keys to adjust the value. The values range from 0C to 255C with an interval of 1C.
Configuration options: [Auto] [0] - [255]
Ceiling High VMax
The highest maximum voltage point that maps to Ceiling Cold Temp should the processor temperature move to colder or equal to Ceiling Cold Temp. Auto is 1.40V.
Use the <+> and <-> keys to adjust the value. The values range from 0.000V to
3.000V with an interval of 0.00625V.
Configuration options: [Auto] [0.00000] - [3.00000]
ROG Z790 Series BIOS Manual 37
38
Ceiling Cold Temp
The coldest temperature point that maps to Ceiling High VMax should the processor temperature move to colder or equal to Ceiling Cold Temp. Auto is 65C. Use the <+> and <-> keys to adjust the value. The values range from 0C to 255C with an interval of 1C.
Configuration options: [Auto] [0] - [255]
CPU VRM Switching Frequency
This item affects the VRM transient response speed and the component thermal production. Select [ Manual ] to configure a higher frequency for a quicker transient response speed. Setting a higher switching frequency will result in better transient response at the expense of higher VRM temperatures. Active cooling of the VRM heatsink is recommended when running high CPU voltage and high load-line calibration values.
Configuration options: [Auto] [Manual]
DO NOT remove the thermal module. The thermal conditions should be monitored.
The following item appears only when CPU VRM Switching Frequency is set to [Auto] .
VRM Spread Spectrum
Allows you to reduce the magnitude of peak noise from the VRM. Enable to reduce peak noise. Disable this setting when overclocking.
Configuration options: [Auto] [Disabled] [Enabled]
The following item appears only when CPU VRM Switching Frequency is set to
[Manual] .
Fixed CPU VRM Switching Frequency(KHz)
Allows you to set a higher frequency for a quicker transient response speed. The values range from 250 KHz to 500 KHz with an interval of 50 KHz.
CPU Power Duty Control
CPU power duty control adjusts the duty cycle of each VRM phase based upon current and/or temperature.
[Auto] Sets to the default setting.
[T. Probe]
[Extreme]
Sets the buck controller to balance VRM FET temperatures
Select to set the VRM current balance mode.
DO NOT remove the thermal module when setting this item to [Extreme] . The thermal conditions should be monitored.
ROG Z790 Series BIOS Manual
CPU Power Phase Control
Allows you to set the power phase control of the CPU.
[Auto] Automatically selects the power phase control.
[Standard]
[Optimized]
[Extreme]
The number of active phases is controlled by the CPU.
Sets the ASUS optimized phase profile.
Sets full phase mode.
DO NOT remove the thermal module when setting this item to [Extreme] . The thermal conditions should be monitored.
CPU Power Thermal Control
Allows you to set the VRM thermal cut-off trip point. 125 Celsius is default and recommended for all overclocking and normal use. Can be set to a lower value if a lower thermal cut-off point is preferred. Use the <+> or <-> to adjust the value. The values range from125C to 145C with an interval of 1C.
Configuration options: [125] - [145]
DO NOT remove the VRM heatsink.
The following items appear only when using the onboard graphics.
CPU Graphics Load-line Calibration
The load-line is defined by the Intel VRM specification and affects the CPU Graphics power voltage. The CPU Graphics working voltage will decrease proportionally depending on the CPU Graphics loading. Higher levels of the load-line calibration can get a higher voltage and a better overclocking performance but increase the CPU
Graphics and VRM thermal production. Select from level 1 to 8 to adjust the CPU
Graphics power voltage from 100% to 0%.
Configuration options [Auto] [Level 1] [Level 2] [Level 3] [Level 4:Recommended for
OC] [Level 5] [Level 6] [Level 7]
Boosted performance may vary depending on the CPU Graphics specification. DO NOT remove the thermal module.
CPU Graphics Current Capability
The CPU Graphics current capability adjusts the total power range for CPU Graphics overclocking. A higher value provides a wider total power range and extends the overclocking frequency range simultaneously.
Configuration options: [Auto] [100%] [140%]
Configure higher values when overclocking or under a high CPU Graphics loading for extra power support.
ROG Z790 Series BIOS Manual 39
40
CPU Graphics VRM Switching Frequency
The switching frequency will affect the CPU Graphics transient response speed and the component thermal production. Select manual mode to configure a higher frequency to get a quicker transient response speed.
Configuration options: [Auto] [Manual]
DO NOT remove the thermal module when setting this item to [Manual] . The thermal conditions should be monitored.
The following item appears only when CPU Graphics VRM Switching Frequency is set to [Manual] .
Fixed CPU Graphics Switching Frequency(KHz)
The switching frequency will affect the CPU Graphics transient response speed and the component thermal production. Use the <+> or <-> to adjust the value. The values range from 250 KHz to 500 KHz with an interval of 50 KHz.
Boot Voltages
CPU Core/Cache Boot Voltage
Allows you to set the CPU voltage at initial boot up. Use the <+> or <-> to adjust the value. The values range from 0.600V to 1.700V with an interval of 0.001V.
Configuration options: [Auto] [0.60000] - [1.70000]
CPU Input Boot Voltage
Allows you to set the CPU Input Voltage at initial boot up. Use the <+> or <-> to adjust the value. The values range from 1.500V to 2.100V with an interval of 0.010V.
Configuration options: [Auto] [1.50000] - [2.10000]
PLL Termination Boot Voltage
Allows you to set the PLL Termination voltage at initial boot up. Use the <+> or <-> to adjust the value. The values range from 0.800V to 1.800V with an interval of 0.010V.
Configuration options: [Auto] [0.80000] - [1.80000]
CPU Standby Boot Voltage
Allows you to set the CPU Standby voltage at initial bootup. Use the <+> or <-> to adjust the value. The values range from 0.800V to 1.800V with an interval of 0.010V.
Configuration options: [Auto] [0.80000] - [1.80000]
Memory Controller Boot Voltage
Allows you to set the Memory Controller voltage at initial bootup. Use the <+> or
<-> to adjust the value. The values range from 1.000V to 2.000V with an interval of
0.00625V.
Configuration options: [Auto] [1.00000] - [2.00000]
Auto Voltage Caps
CPU Core Auto Voltage Cap
Setting this to a specific value will set a ceiling for CPU Core Auto Voltage. When not in manual mode, it’s effectiveness is subject to other factors such as AC/DC Loadline values and CPU’s native VID. Use the <+> or <-> to adjust the value. The values range from 0.600V to 1.700V with an interval of 0.001V.
Configuration options: [Auto] [0.60000] - [1.70000]
ROG Z790 Series BIOS Manual
CPU Input Auto Voltage Cap
Setting this to a specific value will set a ceiling for CPU Input Auto Voltage. Use the
<+> or <-> to adjust the value. The values range from 1.500V to 2.100V with an interval of 0.010V.
Configuration options: [Auto] [1.50000] - [2.10000]
Memory Controller Auto Voltage Cap
Setting this to a specific value will set a ceiling for Memory Controller Auto Voltage.
Use the <+> or <-> to adjust the value. The values range from 1.000V to 2.000V with an interval of 0.00625V.
Configuration options: [Auto] [1.00000] - [2.00000]
Internal CPU Power Management
The items in this submenu allow you to set the CPU ratio and features.
Maximum CPU Core Temperature
Set the maximum allowable temperature for CPU cores. The CPU will throttle or shutdown when it reaches this temperature to prevent damaging the cores.
Configuration options: [Auto] [62] - [115]
Do not set this value too high, as high temperatures may damage the CPU permanently.
Package Temperature Threshold
When regulation is set to enable, frequency will adjust to stay below this package temperature threshold. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [30] - [115]
Regulate Frequency by above Threshold
When regulation is set to enable, frequency will adjust to stay below the above threshold. SVID must be enabled for this to work.
Configuration options: [Auto] [Enabled] [Disabled]
Turbo Mode Parameters
IVR Transmitter VDDQ ICCMAX
Configuration options: [Auto] [0] - [15]
Unlimited ICCMAX
Allows you to enable or disable Unlimited ICCMAX. Support VR Current Limit
(ICCMAX) value set above 511.75A.
Configuration options: [Auto] [Disabled] [Enabled]
CPU Core/Cache Current Limit Max.
Allows you to configure a current limit for frequency or power throttling when overclocking. Can be set to maximum value (511.75) to prevent throttling when overclocking. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [0.00] - [511.75]
CPU Graphics Current Limit
Allows you to configure a high current limit to prevent frequency or power throttling when overclocking. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [0.00] - [511.75]
ROG Z790 Series BIOS Manual 41
42
Long Duration Package Power Limit
An Intel parameter known as [power limit 1] and specified in Watts. The defualt value is defined by TDP of the processor. Increasing the value will allow the Turbo ratio to be maintained for a longer duration under higher current loads.
Configuration options: [Auto] [1] - [4095]
Package Power Time Window
An Intel parameter of [power limit 1] and specified in seconds. The applied value indicates how long the Turbo ratio can be active when TDP is exceeded.
Configuration options: [Auto] [1] [2] [3] [4] [5] [6] [7] [8] [10] [12] [14] [16] [20] [24] [28]
[32] [40] [48] [56] [64] [80] [96] [112] [128] [160] [192] [224] [256] [320] [384] [448]
Short Duration Package Power Limit
An Intel parameter known as [power limit 2] and specified in Watts. It is the second
Intel power limit which provides protection when package power exceeds power limit
1. The default setting is 1.25 times power limit 1. According to Intel, the platform must support this value for up to 10msec when power consumption exceeds power limit
2. ASUS motherboards are engineered to support this duration for a longer time as required to facilitate overclocking.
Configuration options: [Auto] [1] - [4095]
Dual Tau Boost
Allows you to enable or disable Dual Tau Boost feature. This is only applicable for
Desktop 35W/65W/12W sku. When DPTF is enabled this feature is ignored.
Configuration options: [Disabled] [Enabled]
IA AC Load Line
Allows you to set the AC loadline defined in mOhms. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [0.01] - [62.49]
IA DC Load Line
Allows you to set the DC loadline defined in mOhms. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [0.01] - [62.49]
IA CEP Enable
Allows you to enable or disable IA CEP (Current Excursion Protection) Support. Uses pCode Mailbox Command 0x37, Sub-command 0x1. Set Databit2 to 1.
Configuration options: [Auto] [Disabled] [Enabled]
GT CEP Enable
Allows you to enable or disable GT CEP (Current Excursion Protection) Support. Uses pCode Mailbox Command 0x37, Sub-command 0x1. Set Databit3 to 1.
Configuration options: [Auto] [Disabled] [Enabled]
SA CEP Enable
Allows you to enable or disable SA CEP (Current Excursion Protection) Support. Uses pCode Mailbox Command 0x37, Sub-command 0x1. Set Databit3 to 1.
Configuration options: [Auto] [Disabled] [Enabled]
IA SoC Iccmax Reactive Protector
Configuration options: [Auto] [Disabled] [Enabled]
Inverse Temperature Dependency Throttle
Configuration options: [Auto] [Disabled] [Enabled]
ROG Z790 Series BIOS Manual
IA VR Voltage Limit [Auto]
Voltage Limit (VMAX). This value represents the Maximum instantaneous voltage allowed at any given time. Range is 0 - 7999mV. Uses BIOS VR mailbox command
0x8.
Configuration options: [Auto] [0] - [7999]
CPU DLVR Bypass Mode Enable
Configuration options: [Auto] [Disabled] [Enabled]
CPU SVID Support
Disable this item to stop the CPU from communicating with the external voltage regulator.
Configuration options: [Auto] [Disabled] [Enabled]
Thermal Velocity Boost
Cache Dynamic OC Switcher
Enabling this dynamically switches back and forth between High Cache mode and
Low Cache mode based on current threshold specified.
Configuration options: [Auto] [Disabled] [Enabled]
The following items appear only when Cache Dynamic OC Switcher is set to [Enabled] .
Current Threshold to Switch to Low Cache Gear
Set this threshold to control when the Cache goes into high gear and when it goes down to low gear. Bigger than this value = Low Gear, smaller than this value = High
Gear. Recommend a value of 45A. In Amps unit.
Configuration options: [Auto] [Disabled] [Enabled]
High Cache Ratio
The ratio for cache during High Cache Gear.
Configuration options: [Auto] [8] - [200]
High Cache Voltage
The voltage for cache during High Cache Gear. Key 0 for default VID.
Configuration options: [Auto] [0.000] - [1.800]
Low Cache Ratio
The ratio for cache during Low Cache Gear.
Configuration options: [Auto] [8] - [200]
Low Cache Voltage
The voltage for cache during Low Cache Gear. Key 0 for default ViD.
Configuration options: [Auto] [0.000] - [1.800]
TVB Voltage Optimizations
This service controls thermal based voltage optimizations for processors that implement the Intel Thermal Velocity Boost (TVB) feature. This item is set to
[Enabled] by default. Uses Overclocking Mailbox command 0x18/0x19.
Configuration options: [Auto] [Disabled] [Enabled]
Enhanced TVB
This item is only supported on selected SKUs.
Configuration options: [Auto] [Disabled] [Enabled]
ROG Z790 Series BIOS Manual 43
44
Overclocking TVB
Enable this to be able to draw temperature/frequency dependencies.
Configuration options: [Auto] [Disabled] [Enabled] [+1Boost Profile] [+2Boost Profile]
[Boost Until Target]
+1Boost Profile(K CPU):
This setting will enable additional boost of one bin with the help of Auto Optimized
Temperature Control.
+2Boost Profile(K CPU):
This setting will enable additional boost of two bins with the help of Auto Optimized
Temperature Control.
The following items appear only when Overclocking TVB is set to [Enabled] .
1-Core Active / 2-Core Active / 3-Core Active / 4-Core Active / 5-Core Active /
6-Core Active
Configuration options: [Auto] [Enabled]
The following items appear only when 1-Core Active , 2-Core Active , 3-Core Active ,
4-Core Active , 5-Core Active , or 6-Core Active is set to [Enabled] .
Temperature A
Package passing this temperature threshold will engage the negative ratio offset specified in Negative Ratio Offset A . Unit in Degree Celsius.
Configuration options: [Auto] [1] - [115]
Negative Ratio Offset A
This will be the potential negative offset to respective ratio when package temperature rises above threshold specified in Temperature A .
Configuration options: [Auto] [User Specify]
The following item appears only when Negative Ratio Offset A is set to [User Specify] .
Ratio Offset
Use the <+> and <-> keys to adjust the value.
Configuration options: [0] - [31]
Temperature B
Package passing this temperature threshold will engage the negative ratio offset specified in Negative Ratio Offset B . Unit in Degree Celsius.
Configuration options: [Auto] [1] - [115]
Negative Ratio Offset B
This will be the potential negative offset to respective ratio when package temperature rises above threshold specified in Temperature B .
Configuration options: [Auto] [User Specify]
The following item appears only when Negative Ratio Offset B is set to [User Specify] .
Ratio Offset
Use the <+> and <-> keys to adjust the value.
Configuration options: [0] - [31]
ROG Z790 Series BIOS Manual
The following items appear only when Overclocking TVB is set to [Boost Until Target] .
Max Boost Target in MHz
Customize the maximum Target Frequency in MHz or leave auto for auto values based on predictions. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [4000] - [7000]
Overclocking TVB Global Temperature Offset Sign
This selects if positive or negative offset is desired when anyone of the Overclocking
TVB Boost Profiles are selected.
Configuration options: [+] [-]
Overclocking TVB Global Temperature Offset Value
The desired value to offset the temperature thresholds of the Overclocking TVB Boost
Profiles by should be entered here.
Configuration options: [Auto] [0] - [100]
V/F Point Offset
Offset Mode Sign 1-11
Configuration options: [+] [-]
V/F Point 1-11 Offset
Configuration options: [Auto] [0.001] - [0.999]
Tweaker’s Paradise
Initial BCLK Frequency
Allows you to set a different BCLK value during POST. May be useful for setting a lower BCLK in scenarios where memory training is not stable at a higher BCLK
(a large frequency gap between BCLK Frequency and Initial frequency is not recommended). Applies the same value as BCLK Frequency if left at default. Use the <+> and <-> keys to adjust the value. The values range from 80.000MHz to
1000.000MHz with an interval of 0.050MHz.
Configuration options: [Auto] [80.0000] - [1000.00000]
BCLK Amplitude
Allows you to set the magnitude of the reference BCLK supplied to the processor.
Higher values may improve overclocking stability.
Configuration options: [Auto] [800mV] [900mV]
BCLK Slew Rate
Allows you set the speed at which the base clock rises or falls. Set a high value for overclocking stability.
Configuration options: [Auto] [Slow] [Fast]
BCLK Spread Spectrum
Allows you to reduce the EMI. Disable to get more accurate base clocks.
Configuration options: [Auto] [Disabled] [Enabled]
ROG Z790 Series BIOS Manual 45
46
Initial PCIE Frequency
Allows setting a different PCIE BCLK value during POST. May be useful for setting a lower PCIE BCLK in scenarios where memory training is not stable at a higher
BCLK (a large frequency gap between BCLK Frequency and Initial frequency is not recommended). Applies same value as BCLK Frequency if left at default. Use the <+> and <-> keys to adjust the value. The values range from 80.000MHz to 200.000MHz with an interval of 0.100MHz.
Configuration options: [Auto] [80.0000] - [200.00000]
PCIE/DMI Amplitude
Allows you to set the signal magnitude of the reference PCIE/DMI CLK supplied to the processor. Higher values may improve overclocking stability.
Configuration options: [Auto] [800mV] [900mV]
PCIE/DMI Slew Rate
Allows you set the speed at which the base clock rises or falls. Set a high value for overclocking stability.
Configuration options: [Auto] [Slow] [Fast]
PCIE/DMI Spread Spectrum
Configuration options: [Auto] [Disabled] [Enabled]
Cold Boot PCIE Frequency
Allows you to set the PCIE Frequency at cold boot. Use the <+> and <-> keys to adjust the value. The values range from 80.000MHz to 200.000MHz with an interval of 0.100MHz.
Configuration options: [Auto] [80.0000] - [200.00000]
This is only with regards to PCIE clk NOT BCLK.
Realtime Memory Timing
Allows you to enable or disable realtime memory timing. When set to [Enabled] , the system will allow performing realtime memory timing changes after MRC_DONE.
Configuration options: [Disabled] [Enabled]
SPD Write Disable
Allows you to enable or disable setting SPD Write Disable. For security recommendations, SPD write disable bit must be set.
Configuration options: [TRUE] [FALSE]
PVD Ratio Threshold
For the Core Domain PLL, the threshold to switch to lower post divider is 15 by default. You can set a value lower than 15 when pushing high BCLK so that Digitally
Controlled Oscillator (DCO) remains at reasonable frequency.
Configuration options: [Auto] [1] - [40]
SA PLL Frequency Override
Allows you to configure Sa PLL Frequency.
Configuration options: [Auto] [3200 MHz] [1600 MHz]
BCLK TSC HW Fixup
Allows you to enable or disable BCLK TSC HW Fixup disable during TSC copy from
PMA to APIC.
Configuration options: [Enabled] [Disabled]
ROG Z790 Series BIOS Manual
Core Ratio Extension Mode
Allows you to enable or disable Core Ratio Above 85 Extension Mode.
[Disabled] Max Overclocking Ratio Limit as specified by OCMB 0x1 command is 85.
[Enabled] Max Overclocking Ratio Limit as specified by OCMB 0x1 command is 120.
FLL OC mode
Configuration options: [Auto] [Disabled] [Normal] [Elevated] [Extreme Elevated]
UnderVolt Protection
When UnderVolt Protection is enabled, user will not be able to program under voltage in OS runtime. Recommended to keep it enabled by default.
[Disabled] No UnderVolt Protection in Runtime.
[Enabled] Allow BIOS undervolting, but enable UnderVolt Protection in
Runtime.
Switch Microcode
Allows you to enable or disable BCLK TSC HW Fixup disable during TSC copy from
PMA to APIC.
Configuration options: [Enabled] [Disabled]
Core PLL Voltage
Allows you to configure the offset for the Core PLL VCC Trim. The values range from
0.900V to 1.845V with an interval of 0.015V.
Configuration options: [Auto] [0.90000] - [1.84500]
GT PLL Voltage
Allows you to configure the offset for the GT PLL VCC Trim. The values range from
0.900V to 1.845V with an interval of 0.015V.
Configuration options: [Auto] [0.90000] - [1.84500]
Ring PLL Voltage
Allows you to configure the offset for the Ring PLL VCC Trim. The values range from
0.900V to 1.845V with an interval of 0.015V.
Configuration options: [Auto] [0.90000] - [1.84500]
System Agent PLL Voltage
Allows you to configure the offset for the System Agent PLL VCC Trim. The values range from 0.900V to 1.845V with an interval of 0.015V.
Configuration options: [Auto] [0.90000] - [1.84500]
Memory Controller PLL Voltage
Allows you to configure the offset for the Memory Controller PLL VCC Trim. The values range from 0.900V to 1.845V with an interval of 0.015V.
Configuration options: [Auto] [0.90000] - [1.84500]
CPU 1.8V Small Rail
Allows you to configure the voltage for the CPU 1.8V Small Rail. The values range from 1.500V to 2.300V with an interval of 0.010V.
Configuration options: [Auto] [1.50000] - [2.30000]
ROG Z790 Series BIOS Manual 47
48
PLL Termination Voltage
Allows you to configure the voltage for the PLL Termination. The values range from
0.800V to 1.800V with an interval of 0.010V.
Configuration options: [Auto] [0.80000V] - [1.80000V]
CPU Standby Voltage
Allows you to configure the voltage for the CPU Standby. Use the <+> and <-> keys to adjust the value. The values range from 0.800V to 1.800V with an interval of 0.010V.
Configuration options: [Auto] [0.80000] - [1.80000]
PCH 1.05V Voltage
Allows you to configure the voltage for the PCH 1.05V. Use the <+> and <-> keys to adjust the value. The values range from 0.800V to 1.600V with an interval of 0.010V.
Configuration options: [Auto] [0.80000] - [1.60000]
PCH 0.82V Voltage
Allows you to configure the voltage for the PCH 0.82V. Use the <+> and <-> keys to adjust the value. The values range from 0.700V to 1.000V with an interval of 0.010V.
Configuration options: [Auto] [0.70000] - [1.00000]
CPU Input Voltage Reset Voltage
Allows you to configure the voltage for the CPU Input when reset. Use the <+> and
<-> keys to adjust the value. The values range from 1.500V to 2.100V with an interval of 0.010V.
Configuration options: [Auto] [1.50000] - [2.10000]
Eventual CPU Input Voltage
Allows you to configure the voltage for the CPU Input. Use the <+> and <-> keys to adjust the value. The values range from 1.500V to 2.100V with an interval of 0.010V.
Configuration options: [Auto] [1.50000] - [2.10000]
Eventual Memory Controller Voltage
Allows you to configure the voltage for the Memory Controller. Use the <+> and <-> keys to adjust the value. The values range from 1.000V to 2.000V with an interval of
0.00625V.
Configuration options: [Auto] [1.00000] - [2.00000]
AI Features
The items in this menu allows you to enable or disable different AI Features.
Package Temperature Threshold
Frequency will adjust to stay below this package temperature threshold when regulation is enabled.
Configuration options: [Auto] [30] - [115]
Regulate Frequency by above Threshold
Frequency will adjust to stay below the Package Temperature Threshold when this item is enabled. SVID must be enabled for this to work.
Configuration options: [Auto] [Enabled] [Disabled]
ROG Z790 Series BIOS Manual
Cooler Efficiency Customize
[Keep Training]
[Stop Training]
[User Specify]
Continuous evaluations will be performed on Cooler efficiency and updated accordingly.
Cooler efficiency evaluations will stop and current evaluated efficiency will be used.
Manually specify the Cooler efficiency and all predictions will be based off this manual setting.
The following item appears only when Cooler Efficiency Customize is set to [User
Specify] .
Cooler Score
The value of the Cooler’s pts. [Maximum] 250 pts; [Minimum] 1 pts; [Default] 125 pts.
Configuration options: [1] - [250]
Recalibrate Cooler
Allows you to recalibrate your cooler efficiency.
Cooler Re-evaluation Algorithm
Allows you to set how inclined the re-evaluation will update.
Configuration options: [Normal] [More inclined to update] [Very inclined to update]
[Less inclined to update] [Least inclined to update]
Optimism Scale
Allows you to set the optimism of the predictions. The higher the value, the more optimistic the predictions and vice versa.
Configuration options: [50] - [150]
Ring Down Bin
Allows you to enable or disable the Ring Downbin feature. This option is defaulted to
[Enabled] . Uses OC mailbox command 0x19.
[Auto] Set to default.
[Disabled]
[Enabled]
CPU will not down bin the ring ratio and the requested ring ratio limit will be observed.
CPU will down bin the ring ratio, which means the requested max ring ratio may not be observed.
Please use caution when disabling this feature as it may result in overvoltaging of the
CPU.
Min. CPU Cache Ratio
Allows you to set the minimum possible CPU cache ratio. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [8] - [85]
Max. CPU Cache Ratio
Allows you to set the maximum possible CPU cache ratio. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [8] - [85]
ROG Z790 Series BIOS Manual 49
50
Max. CPU Graphics Ratio
Allows you to configure the CPU graphics ratio. The ratio may vary depending on the system loading. Use the <+> and <-> keys to adjust the value.
Configuration options: [Auto] [1] - [42]
Extreme Over-voltage
This item can only be enabled when the onboard CPU_OV jumper is switched on. Setting this item to [Enabled] allows you to configure higher voltages for overclocking, but the CPU lifetime will not be guaranteed.
Configuration options: [Disabled] [Enabled]
BCLK Aware Adaptive Voltage
Allows you to enable or disable BCLK Aware Adaptive Voltage. When enabled, pcode will be aware of the BCLK frequency when calculating the CPU V/F curves. This is ideal for BCLK
OC to avoid high voltage overrides.
Configuration options: [Disabled] [Enabled]
Actual VRM Core Voltage
Allows you to configure the VRM output rail for Core Voltage. Manual mode allows usersdefined values. Offset mode modifies the values by SVID.
Configuration options: [Auto] [Manual Mode] [Offset Mode]
The following item appears only when Actual VRM Core Voltage is set to [Manual
Mode] .
CPU Core Voltage Override
Allows you to configure the input voltage for the CPU by the external voltage regulator. Use the <+> and <-> keys to adjust the value. The values range from 0.600V to 1.700V with an interval of 0.005V.
Configuration options: [Auto] [0.60000] - [1.70000]
The following items appear only when Actual VRM Core Voltage is set to [Offset Mode] .
Offset Mode Sign
[+]
[–]
To offset the CPU core voltage by a positive value.
To offset the CPU core voltage by a negative value.
CPU Core Voltage Offset
Allows you to configure the input voltage for the CPU by the external voltage regulator. Use the <+> or <-> to adjust the value. The values range from 0.005V to 0.635V with an interval of 0.005V.
Configuration options: [Auto] [0.00500] - [0.63500]
Global Core SVID Voltage
Allows you to configure the global Core Voltage requested by the cores. Result may be influenced by Actual VRM Core Voltage.
Configuration options: [Auto] [Manual Mode] [Adaptive Mode]
ROG Z790 Series BIOS Manual
The following item appears only when Global Core SVID Voltage is set to [Manual
Mode] .
CPU Core Voltage Override
Allows you to configure the input voltage for the CPU by the external voltage regulator. Use the <+> and <-> keys to adjust the value. The values range from 0.600V to 1.700V with an interval of 0.005V.
Configuration options: [Auto] [0.60000] - [1.70000]
The following items appear only when Global Core SVID Voltage is set to [Adaptive
Mode] .
Offset Mode Sign
[+]
[–]
To offset the CPU core voltage by a positive value.
To offset the CPU core voltage by a negative value.
Additional Turbo Mode CPU Core Voltage
Allows you to configure the amount of voltage fed to the CPU cores when running in Turbo mode. Increase the voltage when configuring a high CPU core frequency. This voltage will be affected by the offset value. Use the <+> or <-> to adjust the value. The values range from 0.250V to 1.920V with an interval of 0.001V.
Configuration options: [Auto] [0.25000] - [1.92000]
Offset Voltage
Allows you to configure the CPU core voltage offset value. Use the <+> or <-> to adjust the value. The values range from 0.001V to 0.999V with an interval of 0.001V.
Configuration options: [Auto] [0.00100] - [0.99900]
You need to save the changes and reset the system for the changes to take effect.
Cache SVID Voltage
Allows you to configure the Cache Voltage requested by the Ring Domain. Result may be influenced by Actual VRM Core Voltage.
Configuration options: [Auto] [Manual Mode] [Adaptive Mode]
The following item appears only when Cache SVID Voltage is set to [Manual Mode] .
CPU Core Voltage Override
Allows you to configure the voltage for the Cache. Use the <+> and <-> keys to adjust the value. The values range from 0.600V to 1.700V with an interval of 0.001V.
Configuration options: [Auto] [0.60000] - [1.70000]
The following items appear only when Cache SVID Voltage is set to [Adaptive Mode] .
Offset Mode Sign
[+]
[–]
To offset the Cache voltage by a positive value.
To offset the Cache core voltage by a negative value.
ROG Z790 Series BIOS Manual 51
52
Additional Turbo Mode Cache Voltage
Allows you to configure the amount of voltage fed to the CPU cores when running in Turbo mode. Increase the voltage when configuring a high CPU core frequency. This voltage will be affected by the offset value. Use the <+> or <-> to adjust the value. The values range from 0.250V to 1.920V with an interval of 0.001V.
Configuration options: [Auto] [0.25000] - [1.92000]
Offset Voltage
Allows you to configure the Cache voltage offset value. Use the <+> or <-> to adjust the value. The values range from 0.001V to 0.999V with an interval of 0.001V.
Configuration options: [Auto] [0.00100] - [0.99900]
You need to save the changes and reset the system for the changes to take effect.
CPU Graphics Voltage
Allows you to configure the mode of voltage fed to the CPU Graphics. Manual mode allows user-defined values. Offset mode modified values by SVID.
Configuration options: [Auto] [Manual Mode] [Offset Mode]
The following item appears only when CPU Graphics Voltage is set to [Manual Mode] .
CPU Graphics Voltage Override
Allows you to configure the voltage for the CPU Graphics. Use the <+> or <-> to adjust the value. The values range from 0.600V to 1.700V with an interval of 0.005V.
Configuration options: [Auto] [0.60000] - [1.70000]
The following items appear only when CPU Graphics Voltage is set to [Offset Mode] .
Offset Mode Sign
[+]
[–]
To offset the voltage by a positive value.
To offset the voltage by a negative value.
CPU Graphics Voltage Offset
Allows you to configure the CPU graphics voltage offset value. Use the <+> or <-> to adjust the value. The values range from 0.005V to 0.635V with an interval of 0.005V.
Configuration options: [Auto] [0.00500] - [0.63500]
You need to save the changes and reset the system for the changes to take effect.
CPU L2 Voltage
Allows you to configure the voltage for the CPU L2. This may help for sustaining high clock speeds.
Configuration options: [Auto] [Manual Mode] [Adaptive Mode]
ROG Z790 Series BIOS Manual
The following item appears only when CPU L2 Voltage is set to [Manual Mode] .
CPU L2 Voltage Override
Allows you to configure the voltage for the CPU L2. Use the <+> or <-> to adjust the value.
The values range from 0.700V to 1.800V with an interval of 0.001V.
Configuration options: [Auto] [0.70000] - [1.80000]
The following items appear only when CPU L2 Voltage is set to [Adaptive Mode] .
Offset Mode Sign
[+]
[–]
To offset the CPU L2 voltage by a positive value.
To offset the CPU L2 voltage by a negative value.
Additional Turbo Mode CPU L2 Voltage
Allows you to configure the amount of voltage fed to the CPU cores when running in Turbo mode. Increase the voltage when configuring a high CPU core frequency. This voltage will be affected by the offset value. Use the <+> or <-> to adjust the value. The values range from 0.250V to 1.920V with an interval of 0.001V.
Configuration options: [Auto] [0.25000] - [1.92000]
Offset Voltage
Allows you to configure the CPU L2 voltage offset value. Use the <+> or <-> to adjust the value. The values range from 0.001V to 0.999V with an interval of 0.001V.
Configuration options: [Auto] [0.00100] - [0.99900]
You need to save the changes and reset the system for the changes to take effect.
CPU System Agent Voltage
Allows you to configure the voltage for the CPU System Agent.
Configuration options: [Auto] [Manual Mode] [Offset Mode]
The following item appears only when CPU System Agent Voltage is set to [Manual
Mode] .
CPU System Agent Voltage Override
Allows you to configure the input voltage for the CPU by the external voltage regulator. Use the <+> and <-> keys to adjust the value. The values range from 0.700V to 1.800V with an interval of 0.001V.
Configuration options: [Auto] [0.70000] - [1.80000]
The following item appears only when CPU System Agent Voltage is set to [Offset
Mode] .
ROG Z790 Series BIOS Manual 53
54
CPU System Agent Voltage Offset
Allows you to configure the CPU System Agent Voltage offset value. Use the <+> or <-> to adjust the value. The values range from 0.001V to 0.999V with an interval of 0.001V.
Configuration options: [Auto] [0.00100] - [0.99900]
You need to save the changes and reset the system for the changes to take effect.
CPU Input Voltage
Allows you to configure the voltage for the CPU Input. Use the <+> or <-> to adjust the value. The values range from 1.500V to 2.100V with an interval of 0.010V.
Configuration options: [Auto] [1.50000] - [2.10000]
High DRAM Voltage Mode
If this item is set to [Disabled] , the upper range for DRAM Voltage will be 1.435V. If this item is set to [Enabled] , the upper range will be 2.070V. If enabled on non-supported DRAM, the voltage will be lower than requested.
Configuration options: [Auto] [Disabled] [Enabled]
DRAM VDD Voltage
Power for the DRAM ICs’ VDD portion. Use the <+> or <-> to adjust the value. The values range from 0.800V to 1.435V with an interval of 0.005V.
Configuration options: [Auto] [0.80000] - [1.43500]
DRAM VDDQ Voltage
Power for the DRAM ICs’ VDD Data portion. Use the <+> or <-> to adjust the value. The values range from 0.800V to 1.435V with an interval of 0.005V.
Configuration options: [Auto] [0.80000] - [1.43500]
Advanced Memory Voltages
IVR Transmitter VDDQ Voltage
Allows you to set the voltage for the internal transmitter voltage for the Memory
Controller. Use the <+> or <-> to adjust the value. The values range from 0.700V to
2.200V with an interval of 0.005V.
Configuration options: [Auto] [0.70000] - [2.20000]
Memory Controller Voltage
Allows you to set the voltage for the Memory Controller. Use the <+> or <-> to adjust the value. The values range from 1.000 V to 2.000V with an interval of 0.00625V.
Configuration options: [Auto] [1.00000] - [2.00000]
MC Voltage Calculation Voltage Base
Allows you to set the base MC Voltage used for calculations. Use the <+> or <-> to adjust the value. The values range from 0.700V to 2.200V with an interval of 0.005V.
Configuration options: [Auto] [0.70000] - [2.20000]
VDD Calculation Voltage Base
Allows you to set the base VDD Voltage used for calculations. Use the <+> or <-> to adjust the value. The values range from 0.700V to 2.200V with an interval of 0.005V.
Configuration options: [Auto] [0.70000] - [2.20000]
ROG Z790 Series BIOS Manual
PMIC Voltages
Configuration options: [Auto] [Sync All PMICs] [By per PMIC]
The following items appear only when PMIC Voltages is set to [Sync All PMICs] .
SPD HUB VLDO (1.8V)
Allows you to set the main power for the SPD Hub Logic. Default set to 1.8V. Use the <+> or <-> to adjust the value. The values range from 1.700V to 2.000V with an interval of 0.100V.
Configuration options: [Auto] [1.70000] - [2.00000]
SPD HUB VDDIO (1.0V)
Allows you to set the main power for the SPD Hub side-band interface. Default set to
1.0V. Use the <+> or <-> to adjust the value. The values range from 0.900V to 1.200V with an interval of 0.100V.
Configuration options: [Auto] [0.90000] - [1.20000]
DRAM VDD Voltage
Allows you to set the power for the DRAM IC’s VDD portion. Use the <+> or <-> to adjust the value. The values range from 0.800V to 1.435V with an interval of 0.005V.
Configuration options: [Auto] [0.80000] - [1.43500]
DRAM VDDQ Voltage
Allows you to set the power for the DRAM IC’s Data portion. Use the <+> or <-> to adjust the value. The values range from 0.800V to 1.435V with an interval of 0.005V.
Configuration options: [Auto] [0.80000] - [1.43500]
DRAM VPP Voltage
Allows you to set the power for the DRAM Activating Power Supply. Use the <+> or
<-> to adjust the value. The values range from 1.500V to 2.135V with an interval of
0.005V.
Configuration options: [Auto] [1.50000] - [2.13500]
DRAM VDD Switching Frequency
Allows you to set the switching frequency of DRAM VDD regulator in MHz. Use the
<+> or <-> to adjust the value. The values range from 0.750MHz to 1.500MHz with an interval of 0.250MHz.
Configuration options: [Auto] [0.75000] - [1.50000]
DRAM VDDQ Switching Frequency
Allows you to set the switching frequency of DRAM VDDQ regulator in MHz. Use the
<+> or <-> to adjust the value. The values range from 0.750MHz to 1.500MHz with an interval of 0.250MHz.
Configuration options: [Auto] [0.75000] - [1.50000]
DRAM VPP Switching Frequency
Allows you to set the switching frequency of DRAM VPP regulator in MHz. Use the
<+> or <-> to adjust the value. The values range from 0.750MHz to 1.500MHz with an interval of 0.250MHz.
Configuration options: [Auto] [0.75000] - [1.50000]
DRAM Current Capability
Allows you to set the current capability for the switching regulators in Amps. Use the <+> or <-> to adjust the value. The values range from 0.125A to 7.875A with an interval of 0.125A.
Configuration options: [Auto] [0.12500] - [7.87500]
ROG Z790 Series BIOS Manual 55
56
The following items appear only when PMIC Voltages is set to [By per PMIC] .
PMIC0-3 SPD HUB VLDO (1.8V)
Allows you to set the main power for the SPD Hub Logic. Default set to 1.8V. Use the <+> or <-> to adjust the value. The values range from 1.700V to 2.000V with an interval of 0.100V.
Configuration options: [Auto] [1.70000] - [2.00000]
PMIC0-3 SPD HUB VDDIO (1.0V)
Allows you to set the main power for the SPD Hub side-band interface. Default set to
1.0V. Use the <+> or <-> to adjust the value. The values range from 0.900V to 1.200V with an interval of 0.100V.
Configuration options: [Auto] [0.90000] - [1.20000]
PMIC0-3 DRAM VDD Voltage
Allows you to set the power for the DRAM IC’s VDD portion. Use the <+> or <-> to adjust the value. The values range from 0.800V to 1.435V with an interval of 0.005V.
Configuration options: [Auto] [0.80000] - [1.43500]
PMIC0-3 DRAM VDDQ Voltage
Allows you to set the power for the DRAM IC’s Data portion. Use the <+> or <-> to adjust the value. The values range from 0.800V to 1.435V with an interval of 0.005V.
Configuration options: [Auto] [0.80000] - [1.43500]
PMIC0-3 DRAM VPP Voltage
Allows you to set the power for the DRAM Activating Power Supply. Use the <+> or
<-> to adjust the value. The values range from 1.500V to 2.135V with an interval of
0.005V.
Configuration options: [Auto] [1.50000] - [2.13500]
PMIC0-3 DRAM VDD Switching Frequency
Allows you to set the switching frequency of DRAM VDD regulator in MHz. Use the
<+> or <-> to adjust the value. The values range from 0.750MHz to 1.500MHz with an interval of 0.250MHz.
Configuration options: [Auto] [0.75000] - [1.50000]
PMIC0-3 DRAM VDDQ Switching Frequency
Allows you to set the switching frequency of DRAM VDDQ regulator in MHz. Use the
<+> or <-> to adjust the value. The values range from 0.750MHz to 1.500MHz with an interval of 0.250MHz.
Configuration options: [Auto] [0.75000] - [1.50000]
PMIC0-3 DRAM VPP Switching Frequency
Allows you to set the switching frequency of DRAM VPP regulator in MHz. Use the
<+> or <-> to adjust the value. The values range from 0.750MHz to 1.500MHz with an interval of 0.250MHz.
Configuration options: [Auto] [0.75000] - [1.50000]
PMIC0-3 DRAM Current Capability
Allows you to set the current capability for the switching regulators in Amps. Use the <+> or <-> to adjust the value. The values range from 0.125A to 7.875A with an interval of 0.125A.
Configuration options: [Auto] [0.12500] - [7.87500]
ROG Z790 Series BIOS Manual
6. Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system devices. Scroll down to display other BIOS items.
Be cautious when changing the settings of the Advanced menu items. Incorrect field values can cause the system to malfunction.
ROG Z790 Series BIOS Manual 57
6.1 Platform Misc Configuration
The items in this menu allow you to configure the platform-related features.
58
PCI Express Native Power Management
Allows you to enhance the power saving feature of PCI Express and perform ASPM operations in the operating system.
Configuration options: [Disabled] [Enabled]
The following item appears only when PCI Express Native Power Management is set to
[Enabled] .
Native ASPM
Set this item to [Enabled] for OS Controlled ASPM, or set this item to [Disabled] for BIOS controlled ASPM.
Configuration options: [Auto] [Enabled] [Disabled]
PCH - PCI Express
DMI Link ASPM Control
Allows you to control the Active State Power Management of the DMI Link.
Configuration options: [Disabled] [L1] [Auto]
ASPM
Allows you to select the ASPM state for energy-saving conditions.
Configuration options: [Disabled] [L1] [Auto]
L1 Substates
Allows you to select the PCI Express L1 Substates settings.
Configuration options: [Disabled] [L1.1] [L1.1 & L1.2]
ROG Z790 Series BIOS Manual
SA - PCI Express
DMI ASPM
Allows you to set the DMI ASPM Support.
Configuration options: [Disabled] [Auto] [ASPM L1]
DMI Gen3 ASPM
Allows you to set the DMI Gen3 ASPM Support.
Configuration options: [Disabled] [Auto] [ASPM L1]
PEG - ASPM
Allows you to control the ASPM support for the PEG 0. This has no effect if PEG is not the currently active device.
Configuration options: [Disabled] [L0s] [L1] [L0sL1]
PCI Express Clock Gating
Allows you to enable or disable PCI Express Clock Gating for each root port.
Configuration options: [Disabled] [Enabled]
6.2 CPU Configuration
The items in this menu show the CPU-related information that the BIOS automatically detects. Scroll down to display other BIOS items.
The items in this menu may vary based on the CPU installed.
Efficient Core Information
This submenu displays the Efficient Core Information.
Performance Core Information
This submenu displays the Performance Core Information.
ROG Z790 Series BIOS Manual 59
60
Hardware Prefetcher
Allows you to enable or disable the MLC streamer prefetcher.
Configuration options: [Disabled] [Enabled]
Adjacent Cache Line Prefetch
Allows you to prefetch adjacent cache lines, reducing the DRAM loading time and improving the system performance.
Configuration options: [Disabled] [Enabled]
Intel (VMX) Virtualization Technology
When set to [Enabled] , VMX can utilize the additional hardware capabilities provided by
Vanderpool Technology.
Configuration options: [Disabled] [Enabled]
Per P-Core Control
Configuration options: [Disabled] [Enabled]
The following items appear only when Per P-Core Control is set to [Enabled] .
P-Core 0-5
Do not disable all P-core options simultaneously or P-core options will reset after reboot.
Configuration options: [Enabled] [Disabled]
Do not disable all P-core options simultaneously or P-core options will reset after reboot.
Per E-Core Control
Configuration options: [Disabled] [Enabled]
The following items appear only when Per P-Core Control is set to [Enabled] .
E-Core 0-7
Configuration options: [Enabled] [Disabled]
Active Performance Cores
Allows you to select the number of CPU cores to activate in each processor package.
Configuration options: [All] [1] - [5]
Active Efficient Cores
Allows you to select the number of Efficient cores to activate in each processor package.
Configuration options: [All] [0] - [7]
Number of Cores and Efficient Cores are looked at together. When both are {0,0}, Pcode will enable all cores.
ROG Z790 Series BIOS Manual
Hyper-Threading
Allows a hyper-threading processor to appear as two logical processors, allowing the operating system to schedule two threads or processes simultaneously.
[Enabled] For two threads per activated core.
[Disabled] For only one thread per activated core.
The following item appears only when Hyper-Threading is set to [Enabled] .
Per Core Hyper-Threading
The items in this submenu allow you to enable or disable Hyper-Threading for each core.
Hyper-Threading of Core 0-5
Configuration options: [Disabled] [Enabled]
Total Memory Encryption
Allows you to configure the Total Memory Encryption (TME) to protect DRAM data from physical attacks.
Configuration options: [Disabled] [Enabled]
Legacy Game Compatibility Mode
When set to [Enabled] , pressing the scroll lock key will toggle the Efficient-cores between being parked when Scroll Lock LED is on and un-parked when LED is off.
Configuration options: [Disabled] [Enabled]
CPU - Power Management Control
The items in this submenu allow you to manage and configure the CPU’s power.
Boot performance mode
Allows you to select the performance state that the BIOS will set starting from the reset vector.
Configuration options: [Max Battery] [Max Non-Turbo Performance]
[Turbo Performance] [Auto]
Intel(R) SpeedStep(tm)
Allows more than two frequency to be supported.
Configuration options: [Disabled] [Enabled]
Intel(R) Speed Shift Technology
Allows you to disable or enable Intel(R) Speed Shift Technology support. When enabled, CPPC v2 interface allows hardware controlled P-states.
Configuration options: [Disabled] [Enabled]
Turbo Mode
Allows you to automatically set the CPU cores to run faster than the base operating frequency when it is below the operating power, current and temperature specification limit. (Requires EMTTM enabled too)
Configuration options: [Disabled] [Enabled]
Acoustic Noise Settings
The items in this submenu allow you to configure Acoustic Noise Settings for IA, GT, and SA domains.
Acoustic Noise Settings
ROG Z790 Series BIOS Manual 61
62
Acoustic Noise Mitigation
Enabling this option will help mitigate acoustic noise on certain SKUs when the CPU is in deeper C state.
Configuration options: [Disabled] [Enabled]
The following items appear only when Acoustic Noise Mitigation is set to [Enabled] .
Pre Wake Time
Allows you to set the maximum Pre Wake randomization time in micro ticks. This is for acoustic noise mitigation Dynamic Periodicity Alteration (DPA) tuning. Use the <+> or <-> to adjust the value.
Configuration options: [0] - [255]
Ramp Up Time
Allows you to set the maximum Ramp Up randomization time in micro ticks. This is for acoustic noise mitigation Dynamic Periodicity Alteration (DPA) tuning. Use the <+> or <-> to adjust the value.
Configuration options: [0] - [255]
Ramp Down Time
Allows you to set the maximum Ramp Down randomization time in micro ticks. This is for acoustic noise mitigation Dynamic Periodicity Alteration (DPA) tuning. Use the <+> or <-> to adjust the value.
Configuration options: [0] - [255]
IA VR Domain
Disable Fast PKG C State Ramp for IA Domain
This option needs to be configured to reduce acoustic noise during deeper C states.
[FALSE] Don’t disable Fast ramp during deeper C states.
[TRUE] Disable Fast ramp during deeper C state.
Slow Slew Rate for IA Domain
Set VR IA Slow Slew Rate for Deep Package C State ramp time; Slow slew rate equals to Fast divided by number, the number is 2, 4, 8 to slow down the slew rate to help minimize acoustic noise.
Configuration options: [Fast/2] [Fast/4] [Fast/8]
GT VR Domain
Disable Fast PKG C State Ramp for GT Domain
This option needs to be configured to reduce acoustic noise during deeper C states.
[FALSE] Don’t disable Fast ramp during deeper C states.
[TRUE] Disable Fast ramp during deeper C state.
Slow Slew Rate for GT Domain
Set VR GT Slow Slew Rate for Deep Package C State ramp time; Slow slew rate equals to Fast divided by number, the number is 2, 4, 8 to slow down the slew rate to help minimize acoustic noise.
Configuration options: [Fast/2] [Fast/4] [Fast/8]
CPU C-states
Allows you to enable or disable CPU Power Management. Allows CPU to go to C states when it’s not 100% utilized.
Configuration options: [Auto] [Disabled] [Enabled]
ROG Z790 Series BIOS Manual
The following items appear only when CPU C-states is set to [Enabled] .
Enhanced C-States
Allows you to enable or disable C1E. When enabled, CPU slows doen to minimum speed when all cores enter C-State.
Configuration options: [Enabled] [Disabled]
Package C State Limit
Allows you to set the C-state limit for the CPU package. Setting to [CPU Default] will leave it as the Factory default value. Setting to [Auto] will initialize the deepest available Package C State Limit.
Configuration options: [C0/C1] [C2] [C3] [C6] [C7] [C7s] [C8] [C9] [C10] [CPU Default]
[Auto]
Thermal Monitor
Allows you to enable or disable the Thermal Monitor.
Configuration options: [Disabled] [Enabled]
Dual Tau Boost
Allows you to enable Dual Tau Boost feature. This is only applicable for Desktop
35W/65W/125W sku. When DPTF is enabled this feature is ignored.
Configuration options: [Disabled] [Enabled]
6.3 System Agent (SA) Configuration
The items in this menu allow you to change the System Agent (SA) parameters.
VT-d
Allows you to enable virtualization technology function on memory control hub.
Configuration options: [Enabled] [Disabled]
ROG Z790 Series BIOS Manual 63
64
The following item appears only when VT-d is set to [Enabled] .
Control Iommu Pre-boot Behavior
Allows you to enable IOMMU in Pre-boot environment (if DMAR table is installed in DXE and if VTD_INFO_PPI is installed in PEI).
Configuration options: [Disable IOMMU] [Enable IOMMU during boot]
Memory Configuration
The items in this submenu allow you to set memory configuration parameters.
Memory Remap
Allows you to enable or disable memory remap above 4GB.
Configuration options: [Enabled] [Disabled]
Graphics Configuration
The items in this submenu allow you to select a primary display from CPU Graphics, PEG
Graphics devices, or PCIe Graphics devices.
Primary Display
Allows you to select the primary display from CPU Graphics / PEG Graphics / PCIe
Graphics device.
Configuration options: [Auto] [CPU Graphics] [PEG Slot] [PCIE] iGPU Multi-Monitor
Set this item to [Enabled] to empower both integrated and discrete graphics for multimonitor output. iGPU shared system memory size will be fixed at 64M.
Configuration options: [Disabled] [Enabled]
DVMT Pre-Allocated
Allows you to select the DVMT 5.0 Pre-Allocated (Fixed) Graphics Memory size used by the Internal Graphics Device.
Configuration options: [32M] [64M] [96M] [128M] [160M] [192M] [224M] [256M] [288M]
[320M] [352M] [384M] [416M] [448M] [480M] [512M]
RC6(Render Standby)
Allows you to enable render standby support.
Configuration options: [Disabled] [Enabled]
VMD setup menu
The items in this submenu allow you to set the VMD configuration settings.
Enable VMD controller
Allows you to enable or disable the VMD controller.
Configuration options: [Disabled] [Enabled]
Setting the Enable VMD controller to [Disabled] may result in data loss.
ROG Z790 Series BIOS Manual
The following items appear only when Enable VMD controller is set to [Enabled] .
Map PCIE Storage under VMD
Allows you to map or unmap PCIE Storage to VMD.
Configuration options: [Disabled] [Enabled]
Ensure to set Map SATA Controller under VMD to [Disabled] if you set Map PCIE
Storage under VMD to [Enabled] .
Map SATA Controller under VMD
Allows you to map or unmap this Root Port to VMD.
Configuration options: [Disabled] [Enabled]
Ensure to set Map PCIE Storage under VMD to [Disabled] if you set Map SATA
Controller under VMD to [Enabled] .
PCI Express Configuration
The items in this submenu allow you to configure the PCIe Speeds for the different onboard slots.
The items in this submenu may vary according to your motherboard. Please refer to the
BIOS of your motherboard for the actual settings and options.
6.4 PCH Configuration
The items in this menu allow you to change the PCIe configurations for slots supported by the PCH.
PCI Express Configuration
The items in this submenu allow you to configure the PCIe Speeds for the different onboard slots supported by the PCH.
The items in this submenu may vary according to your motherboard. Please refer to the
BIOS of your motherboard for the actual settings and options.
ROG Z790 Series BIOS Manual 65
6.5 PCH Storage Configuration
While entering Setup, the BIOS automatically detects the presence of SATA devices. The
SATA device port items show Empty if no SATA device is installed to the corresponding port. Scroll down to display the other BIOS items.
The settings and options of this menu may vary depending on your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
66
SATA Controller(s)
Allows you to enable or disable the SATA Device.
Configuration options: [Disabled] [Enabled]
The following items appear only when SATA Controller(s) is set to [Enabled] .
Aggressive LPM support
Allows PCH to aggressively enter link power state.
Configuration options: [Disabled] [Enabled]
SMART Self Test
S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is a monitoring system that shows a warning message during POST (Power-on Self Test) when an error occurs in the hard disks.
Configuration options: [Disabled] [Enabled]
The SATA items may vary according to your motherboard’s ports/slots. Please refer to the
BIOS of your motherboard for the actual settings and options.
M.2
Allows you to enable or disable the selected SATA port.
Configuration options: [Disabled] [Enabled]
ROG Z790 Series BIOS Manual
SATA6G
Allows you to enable or disable the selected SATA port.
Configuration options: [Disabled] [Enabled]
SATA6G Hot Plug
Designates this port as Hot Pluggable.
Configuration options: [Disabled] [Enabled]
6.6 PCH-FW Configuration
This item allows you to configure the Management Engine Technology parameters.
PTT
Allows you to enable or disable PTT in SkuMgr.
Configuration options: [Disabled] [Enabled]
6.7 Thunderbolt(TM) Configuration
The items in this menu allow you to configure Thunderbolt settings.
The availability of this menu, as well as the settings and options may vary depending on your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
PCIE Tunneling over USB4
Allows you to enable or disable PCIE Tunneling over USB4.
Configuration options: [Disabled] [Enabled]
ROG Z790 Series BIOS Manual 67
68
Discrete Thunderbolt(TM) Support
Allows you to enable or disable Discrete Thunderbolt(TM) Support.
Configuration options: [Disabled] [Enabled]
• Please set Control Iommu Pre-boot Behavior in the System Agent(SA)
Configuration page to [Enabled] to support DMA Protection Feature.
• The following items appear only when Discrete Thunderbolt(TM) Support is set to
[Enabled] .
Wake From Thunderbolt(TM) Devices
Allows you to enable or disable system wake from Thunderbolt(TM) devices.
Configuration options: [Disabled] [Enabled]
Discrete Thunderbolt(TM) Configuration
The items in this submenu allow you to configure Discrete Thunderbolt(TM) related configurations.
DTBT Go2Sx Command
Allows you to enable the command to put DTBT into Sx state while system is going into Sx.
Configuration options: [Disabled] [Enabled]
Windows 10 Thunderbolt Support
Allows you to specify Windows 10 Thunderbolt support level.
[Enable + RTD3] OS Native support plus RTD3.
[Disabled] No OS native support.
DTBT Controller 0 Configuration
DTBT Contorller 0
Configuration options: [Disabled] [Enabled]
TBT Host Router
Allows you to enable host router based on ports available.
Configuration options: [One Port] [Two Port]
Extra Bus Reserved
Allows you to select the TBT Root Port Type.
[56] One port Host.
[106] Two port Host.
Reserved Memory
Allows you to set the Reserved Memory for this Root Bridge. Use the <+> and <-> keys to adjust the value.
Configuration options: [1] - [4096]
Memory alignment
Allows you to set the memory alignment bits. Use the <+> and <-> keys to adjust the value.
Configuration options: [0] - [31]
Reserved PMemory
Allows you to set the Reserved Prefetchable Memory for this Root Bridge. Use the <+> and <-> keys to adjust the value.
Configuration options: [1] - [4096]
ROG Z790 Series BIOS Manual
PMemory alignment
Allows you to set the PMemory alignment bits. Use the <+> and <-> keys to adjust the value.
Configuration options: [0] - [31]
Reserved I/O
Use the <+> and <-> keys to adjust the value. The values range from 0 to 60.
6.8 Trusted Computing
The items in this menu allow you to configure the Trusted Computing settings.
The availability of this menu, as well as the settings and options may vary depending on your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
Security Device Support
Allows you to enable or disable the BIOS support for security device. O.S. will not show
Security Device. TCG EFI protocol and INT1A interface will not be available.
Configuration options: [Disable] [Enable]
The following items appear only when Security Device Support is set to [Enable] .
SHA256 PCR Bank
Allows you to enable or disable the SHA256 PCR Bank.
Configuration options: [Disabled] [Enabled]
Pending operation
Allows you to schedule an Operation for the Security Device.
Configuration options: [None] [TPM Clear]
Your computer will reboot during restart in order to change the State of the Security
Device.
ROG Z790 Series BIOS Manual 69
70
Platform Hierarchy
Allows you to enable or disable the Platform Hierarchy.
Configuration options: [Disabled] [Enabled]
Storage Hierarchy
Allows you to enable or disable the Storage Hierarchy.
Configuration options: [Disabled] [Enabled]
Endorsement Hierarchy
Allows you to enable or disable the Endorsement Hierarchy.
Configuration options: [Disabled] [Enabled]
Physical Presence Spec Version
Allows you to select to Tell O.S. to support PPI Version 1.2 or 1.3.
Configuration options: [1.2] [1.3]
Some HCK tests might not support 1.3.
TPM 2.0 UEFI Spec Version
Allows you to select the TCG2 spec version support.
[TCG_1_2]
[TCG_2]
Windows 8 / Windows 10 compatible mode.
Supports the new TCG2 protocol and event for Windows 10 or later.
6.9 UEFI Variables Protection
The items in this menu allow you to configure the NVRAM Runtime Variable Protection settings.
Password protection of Runtime Variables
Allows you to control the NVRAM Runtime Variable Protection through System Admin
Password.
Configuration options: [Disable] [Enable]
ROG Z790 Series BIOS Manual
6.10 PCI Subsystem Settings
The items in this menu allow you to configure PCI, PCI-X, and PCI Express settings.
Above 4G Decoding
Allows you to enable or disable 64bit capable Devices to be Decoded in Above 4G Address
Space (Only if System supports 64 bit PCI Decoding).
Configuration options: [Disabled] [Enabled]
• Only enabled under 64bit operating system.
• The following item appears only when Above 4G Decoding is set to [Enabled] .
Re-Size BAR Support
If the system has Resizable BAR capable PCIe Devices, this option enables or disables
Resizable BAR Support (Only if System supports 64 bit PCI Decoding).
Configuration options: [Disabled] [Enabled]
To enable Re-Size BAR Support for harnessing full GPU memory, please go to the Boot section and set CSM(Compatibility Support Module) to [Disabled] .
SR-IOV Support
This option enables or disables Single Root IO Virtualization Support if the system has SR-
IOV capable PCIe devices.
Configuration options: [Disabled] [Enabled]
ROG Z790 Series BIOS Manual 71
6.11 USB Configuration
The items in this menu allow you to change the USB-related features.
72
The Mass Storage Devices item shows the auto-detected values. If no USB device is detected, the item shows None .
Legacy USB Support
[Enabled]
[Disabled]
[Auto]
Your system supports the USB devices in legacy operating systems.
Your USB devices can be used for BIOS setup only and cannot be recognized in the boot devices list.
Your system automatically detects the presence of USB devices at startup.
If any USB devices are detected, the legacy USB support is enabled.
XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change should be claimed by XHCI driver.
[Disabled] Support XHCI by XHCI drivers for operating systems with XHCI support.
[Enabled] Support XHCI by BIOS for operating systems without XHCI support.
Mass Storage Devices:
Allows you to select the mass storage device emulation type for devices connected. [Auto] enumerates devices according to their media format. Optical drives are emulated as [CD-
ROM] , drives with no media will be emulated according to a drive type.
Configuration options: [Auto] [Floppy] [Forced FDD] [Hard Disk] [CD-ROM]
USB Single Port Control
Allows you to enable or disable the individual USB ports.
Refer to section Motherboard layout and Rear I/O connection in your motherboard’s user manual for the location of the USB ports.
ROG Z790 Series BIOS Manual
6.12 Network Stack Configuration
The items in this menu allow you to change the Network Stack Configuration.
Network stack
Allows you to disable or enable the UEFI network stack.
Configuration options: [Disabled] [Enabled]
The following items appear only when Network Stack is set to [Enabled] .
Ipv4/Ipv6 PXE Support
Allows you to enable or disable the Ipv4/Ipv6 PXE boot support.
Configuration options: [Disabled] [Enabled]
6.13 NVMe Configuration
This menu displays the NVMe controller and Drive information of the connected devices.
You may press <Enter> on a connected NVMe device which appears in this menu to view more information on the NVMe device.
The options displayed in this menu may vary depending on the devices connected to your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
ROG Z790 Series BIOS Manual 73
6.14 HDD/SSD SMART Information
The items in this menu allow you to view the SMART information for connected storage devices.
The options displayed in this menu may vary depending on the devices connected to your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
NVM Express devices do not support SMART information.
6.15 APM Configuration
The items in this menu allow you to change the advanced power management settings.
74
Restore AC Power Loss
Allows you to set the AC power state to enter when power is re-applied after a power failure.
Configuration options: [Power Off] [Power On] [Last State]
Max Power Saving
Configuration options: [Disabled] [Enabled]
ROG Z790 Series BIOS Manual
ErP Ready
Allows you to switch off some power at S4+S5 or S5 to get the system ready for ErP requirement. When set to [Enabled] , all other PME options are switched off. RGB LEDs and
RGB/Addressable RGB Headers will also be disabled.
Configuration options: [Disabled] [Enabled (S4+S5)] [Enabled (S5)]
Power On By PCI-E
Allows you to enable or disable the Wake-on-LAN function of the onboard LAN controller or other installed PCI-E LAN cards.
Configuration options: [Disabled] [Enabled]
Power On By RTC
Allows you to enable or disable the RTC (Real-Time Clock) to generate a wake event and configure the RTC alarm date. When enabled, you can set the days, hours, minutes, or seconds to schedule an RTC alarm date.
Configuration options: [Disabled] [Enabled]
6.16 Onboard Devices Configuration
The items in this menu allow you to change the onboard devices settings. Scroll down to view the other BIOS items.
The settings and options of this menu may vary depending on your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
PCIe Bandwidth Bifurcation Configuration
[Auto]
[X8/X8]
Run full PCIe X16 mode.
Split up PCIEX16(G5) that runs X16 into X8/X8.
ROG Z790 Series BIOS Manual 75
76
USB Audio
Controls the detection of the USB-Audio device.
[Disabled] USB-Audio will be unconditionally disabled.
[Enabled] USB-Audio will be unconditionally enabled.
Intel LAN
Allows you to enable or disable Intel LAN.
Configuration options: [Disabled] [Enabled]
USB power delivery in Soft Off state (S5)
Allows you to enable or disable USB power when your PC is in the S5 state.
Configuration options: [Disabled] [Enabled]
Connectivity mode (Wi-Fi & Bluetooth)
Allows you to enable or disable Wi-Fi and Bluetooth connectivity module.
Configuration options: [Disabled] [Enabled]
LED lighting
When system is in working state
Allows you to turn the RGB LED lighting on or off when the system is in the working state.
[All On] RGB LEDs and Functional will be behave normally.
[Stealth Mode] All LEDs will be disabled.
[Aura Only]
[Aura Off]
RGB LEDs will light up, while all functional LEDs will be disabled.
Functional LEDs behave normally, while RGB LEDs will be disabled.
The RGB Header(s) and Addressable Header(s) will only work under the S0 (working) state.
Q-Code LED Function
[Disabled]
[POST Code Only]
[Auto]
Disable the Q-Code LED.
Show POST (Power-On Self-Test) code on Q-Code LED.
Automatically display POST (Power-On Self-Test) code and
CPU temperature on Q-Code LED.
When system is in sleep, hibernate or soft off states
Allows you to turn the RGB LED lighting on or off when the system is in the sleep, hibernate or soft off states.
[All On] RGB LEDs and Functional will be behave normally.
[Stealth Mode] All LEDs will be disabled.
[Aura Only]
[Aura Off]
RGB LEDs will light up, while all functional LEDs will be disabled.
Functional LEDs behave normally, while RGB LEDs will be disabled.
The RGB Header(s) and Addressable Header(s) will only work under the S0 (working) state.
ROG Z790 Series BIOS Manual
M.2 Configuration
[Auto]
[SATA]
[PCIE]
Auto detects the M.2 device mode. Choose this item to support Intel
Optane Memory H Series.
Only supports M.2 SATA devices.
Only supports M.2 PCIE devices.
PCIEX16(G4) Configuration
[PCIEX4 Add-on Card]
[Dual M.2 SSD]
[ Optane Memory on ROG Hyper
M.2_1]
[ Optane Memory on ROG Hyper
M.2_2]
[Dual Optane Memory]
Support PCIe x4 mode.
Support PCIe x4/x4 mode for 2 SSDs onto ROG Hyper
M.2 Card.
Support PCIe x2/x2 mode for Optane Memory at M.2_1 and x4 mode for SSD at M.2_2
Support PCIe x4 mode for Optane Memory at M.2_1 and x2/x2 mode for SSD at M.2_2
Support PCIe x2/x2/x2/x2 mode fore installing Optane
Memory at both M.2_1 and M.2_2 onto ROG Hyper M.2
Card.
Type C Power Mode
[Auto]
[Enabled]
Power will be provided to U32G2 Type-C port automatically when a device is detected.
Power will always be on for U32G2 Type-C port.
GNA Device
Allows you to enable or disable SA GNA Device.
Configuration options: [Enabled] [Disabled]
ASM1061 Configuration
ASMedia Storage Controller
Allows you to enable or disable the ASMedia storage controller.
Configuration options: [Disabled] [Enabled]
The following items appear only when ASMedia Storage Controller is set to [Enabled] .
Windows Hot-plug Notification
Allows you to enable or disable the hot-plug notification in Windows operating systems.
Configuration options: [Disabled] [Enabled]
ASPM Support
Allows you to enable or disable the controller ASPM (Active State Power
Management) for energy saving support.
Configuration options: [Disabled] [Enabled]
Alteration Mode Switch
[PCIE Link Speed]
[Fan Profile]
1st step: Gen 4.0, 2nd step: Gen 3.0
1st step: Silent, 2nd step: Full Speed
ROG Z790 Series BIOS Manual 77
6.17 Intel(R) Rapid Storage Technology
The items in this menu allow you manage RAID volumes on the Intel(R) RAID Controller.
• The settings and options of this menu may vary depending on the storage devices connected. Please refer to the BIOS of your motherboard for the actual settings and options.
• Ensure to set the VMD configuration settings before using Intel(R) Rapid Storage
Technology to create a RAID set.
78 ROG Z790 Series BIOS Manual
7. Monitor menu
The Monitor menu displays the system temperature/power status, and allows you to change the fan settings.
Scroll down to display the other BIOS items.
The settings and options of this menu may vary depending on your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
Temperature Monitor
CPU Temperature, CPU Package Temperature, MotherBoard Temperature, VRM
Temperature, Chipset Temperature, T_Sensor Temperature, Water In/Out T
Sensor Temperature, DIMM A Temperature, DIMM B Temperature [xxx°C/xxx°F]
The onboard hardware monitor automatically detects and displays the temperatures for the different components. Select [Ignore] if you do not wish to display the detected temperatures.
Fan Speed Monitor
CPU Fan Speed, CPU Optional Fan Speed, Chassis Fan Speed, Water Pump+
Speed, AIO PUMP Speed [xxxx RPM]
The onboard hardware monitor automatically detects and displays the fan speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the field shows N/A. Select [Ignore] if you do not wish to display the detected speed.
Flow Rate
The onboard hardware monitor automatically detects the flow rate. Select [Ignore] if you do not want to detect this item.
ROG Z790 Series BIOS Manual 79
80
Voltage and Current Monitor
CPU Core Voltage, 12V Voltage, 5V Voltage, 3.3V Voltage, Memory Controller
Voltage [x.xxx V]
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators. Select [Ignore] if you do not want to detect this item.
Q-Fan Configuration
Q-Fan Tuning
Click this item to automatically detect the lowest speed and configure the minimum duty cycle for each fan.
The process may take 2 to 5 minutes. DO NOT shut down or reset your system during the tuning process.
CPU Q-Fan Control
Allows you to set the CPU Q-Fan operating mode.
[Auto Detect] Detects the type of installed fan/pump and automatically switches the control modes.
[DC Mode]
[PWM Mode]
Enables the Q-Fan Control feature in DC mode for 3-pin fan/pump.
Enables the Q-Fan Control feature in PWM mode for 4-pin fan/ pump.
CPU Fan Profile
Allows you to set the appropriate performance level of the assigned fan/pump. When selecting [Manual] , we suggest raising your fan/pump duty to 100% if your CPU temperature exceeds 75 ° C. Please be noted CPU performance will throttle due to overheating with inefficient fan/pump duty.
Configuration options: [Standard] [Silent] [Turbo] [Full Speed] [Manual]
The following items appear only when CPU Fan Profile is set to [Standard] , [Silent] ,
[Turbo] , or [Manual].
CPU Fan Step Up
Step up allows you to adjust how quickly the fan rotation speed increases, with level 0 being an instantaneous change in speed. The higher the level, the slower the change in speed, and may also result in less noise, but this will also cause slower heat dissipation.
Configuration options: [Level 0] [Level 1] [Level 2] [Level 3] [Level 4] [Level 5]
CPU Fan Step Down
Step down allows you to adjust how quickly the fan rotation speed decreases, with level 0 being an instantaneous change in speed. The higher the level, the slower the change in speed, and may also result in less noise, but this will also cause slower heat dissipation.
Configuration options: [Level 0] [Level 1] [Level 2] [Level 3] [Level 4] [Level 5]
ROG Z790 Series BIOS Manual
CPU Fan Speed Low Limit
Allows you to set the lower speed limit for assigned fan/pump. A warning message will appear when the limit is reached; the warning message will not appear if [Ignore] is selected.
Configuration options: [Ignore] [200 RPM] [300 RPM] [400 RPM] [500 RPM] [600
RPM]
The following items appear only when CPU Fan Profile is set to [Manual].
CPU Fan Point4 Temperature
When the temperature source is lower than the temperature of P4, the duty cycle will be determined according to the P3-P4 and the temperature source. When the temperature source is higher than the temperature of P4, the fan will operate at the duty cycle of P4. Use the <+> or <-> keys to adjust the temperature.
CPU Fan Point4 Duty Cycle (%)
When the temperature source is lower than the temperature of P4, the duty cycle will be determined according to the P3-P4 and the temperature source. When the temperature source is higher than the temperature of P4, the fan will operate at the duty cycle of P4. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
CPU Fan Point3 Temperature
When the temperature source is lower than the temperature of P3, the duty cycle will be determined according to the P2-P3 and the temperature source. When the temperature source is higher than the temperature of P3, the fan will operate at the duty cycle of P3-P4. Use the <+> or <-> keys to adjust the temperature.
CPU Fan Point3 Duty Cycle (%)
When the temperature source is lower than the temperature of P3, the duty cycle will be determined according to the P2-P3 and the temperature source. When the temperature source is higher than the temperature of P3, the fan will operate at the duty cycle of P3-P4. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
CPU Fan Point2 Temperature
When the temperature source is lower than the temperature of P2, the duty cycle will be determined according to the P1-P2 and the temperature source. When the temperature source is higher than the temperature of P2, the fan will operate at the duty cycle of P2-P3. Use the <+> or <-> keys to adjust the temperature.
CPU Fan Point2 Duty Cycle (%)
When the temperature source is lower than the temperature of P2, the duty cycle will be determined according to the P1-P2 and the temperature source. When the temperature source is higher than the temperature of P2, the fan will operate at the duty cycle of P2-P3. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
CPU Fan Point1 Temperature
When the temperature source is lower than the temperature of P1, the fan will operate at the duty cycle of P1. When the temperature source is higher than the temperature of P1, the duty cycle will be determined according to P1-P2 and the temperature source. Use the <+> or <-> keys to adjust the temperature.
ROG Z790 Series BIOS Manual 81
82
CPU Fan Point1 Duty Cycle (%)
When the temperature source is lower than the temperature of P1, the fan will operate at the duty cycle of P1. When the temperature source is higher than the temperature of P1, the duty cycle will be determined according to P1-P2 and the temperature source. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
Chassis Fan(s) Configuration
Chassis Fan Q-Fan Control
Allows you to set the Chassis Fan operating mode.
[Auto Detect]
[DC Mode]
[PWM Mode]
Detects the type of installed fan/pump and automatically switches the control modes.
Enables the Q-Fan Control feature in DC mode for 3-pin fan/ pump.
Enables the Q-Fan Control feature in PWM mode for 4-pin fan/ pump.
Chassis Fan Profile
Allows you to set the appropriate performance level of the assigned fan/pump. When selecting [Manual] , we suggest raising your fan/pump duty to 100% if your CPU temperature exceeds 75 ° C. Please be noted CPU performance will throttle due to overheating with inefficient fan/pump duty.
Configuration options: [Standard] [Silent] [Turbo] [Full Speed] [Manual]
The following items appear only when CPU Fan Profile is set to [Standard] , [Silent] ,
[Turbo] , or [Manual].
Chassis Fan Q-Fan Source
The assigned fan/pump will be controlled according to the selected temperature source.
Configuration options: [CPU] [MotherBoard] [VRM] [Chipset] [T_Sensor] [Water In T
Sensor] [Water Out T Sensor] [Multiple Sources]
For Multiple Sources, select up to three temperature sources and the fan will automatically change based on the highest temperature.
Chassis Fan Step Up
Step up allows you to adjust how quickly the fan rotation speed increases, with level 0 being an instantaneous change in speed. The higher the level, the slower the change in speed, and may also result in less noise, but this will also cause slower heat dissipation.
Configuration options: [Level 0] [Level 1] [Level 2] [Level 3] [Level 4] [Level 5]
Chassis Fan Step Down
Step down allows you to adjust how quickly the fan rotation speed decreases, with level 0 being an instantaneous change in speed. The higher the level, the slower the change in speed, and may also result in less noise, but this will also cause slower heat dissipation.
Configuration options: [Level 0] [Level 1] [Level 2] [Level 3] [Level 4] [Level 5]
Chassis Fan Speed Low Limit
Allows you to set the lower speed limit for assigned fan/pump. A warning message will appear when the limit is reached; the warning message will not appear if [Ignore] is selected.
Configuration options: [Ignore] [200 RPM] [300 RPM] [400 RPM] [500 RPM] [600 RPM]
ROG Z790 Series BIOS Manual
The following items appear only when Chassis Fan 1-5 Profile is set to [Manual].
Chassis Fan Point4 Temperature
When the temperature source is lower than the temperature of P4, the duty cycle will be determined according to the P3-P4 and the temperature source. When the temperature source is higher than the temperature of P4, the fan will operate at the duty cycle of P4.
Use the <+> or <-> keys to adjust the temperature.
Chassis Fan Point4 Duty Cycle (%)
When the temperature source is lower than the temperature of P4, the duty cycle will be determined according to the P3-P4 and the temperature source. When the temperature source is higher than the temperature of P4, the fan will operate at the duty cycle of P4.
Use the <+> or <-> keys to adjust the fan/pump duty cycle.
Chassis Fan Point3 Temperature
When the temperature source is lower than the temperature of P3, the duty cycle will be determined according to the P2-P3 and the temperature source. When the temperature source is higher than the temperature of P3, the fan will operate at the duty cycle of P3-
P4. Use the <+> or <-> keys to adjust the temperature.
Chassis Fan Point3 Duty Cycle (%)
When the temperature source is lower than the temperature of P3, the duty cycle will be determined according to the P2-P3 and the temperature source. When the temperature source is higher than the temperature of P3, the fan will operate at the duty cycle of P3-
P4. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
Chassis Fan Point2 Temperature
When the temperature source is lower than the temperature of P2, the duty cycle will be determined according to the P1-P2 and the temperature source. When the temperature source is higher than the temperature of P2, the fan will operate at the duty cycle of P2-
P3. Use the <+> or <-> keys to adjust the temperature.
Chassis Fan Point2 Duty Cycle (%)
When the temperature source is lower than the temperature of P2, the duty cycle will be determined according to the P1-P2 and the temperature source. When the temperature source is higher than the temperature of P2, the fan will operate at the duty cycle of P2-
P3. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
Chassis Fan Point1 Temperature
When the temperature source is lower than the temperature of P1, the fan will operate at the duty cycle of P1. When the temperature source is higher than the temperature of P1, the duty cycle will be determined according to P1-P2 and the temperature source. Use the <+> or <-> keys to adjust the temperature.
Chassis Fan Point1 Duty Cycle (%)
When the temperature source is lower than the temperature of P1, the fan will operate at the duty cycle of P1. When the temperature source is higher than the temperature of P1, the duty cycle will be determined according to P1-P2 and the temperature source. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
Allow Fan Stop
This function allows the fan to run at 0% duty cycle when the temperature of the source is dropped below the lower temperature.
Configuration options: [Disabled] [Enabled]
ROG Z790 Series BIOS Manual 83
84
Water Pump+ Q-Fan Control
Allows you to set the Water Pump+ operating mode.
[Auto Detect] Detects the type of installed fan/pump and automatically switches the control modes.
[DC Mode]
[PWM Mode]
Enables the Q-Fan Control feature in DC mode for 3-pin fan/pump.
Enables the Q-Fan Control feature in PWM mode for 4-pin fan/ pump.
Water Pump+ Profile
Allows you to set the appropriate performance level of the assigned fan/pump. When selecting [Manual] , we suggest raising your fan/pump duty to 100% if your CPU temperature exceeds 75 ° C. Please be noted CPU performance will throttle due to overheating with inefficient fan/pump duty.
Configuration options: [Standard] [Silent] [Turbo] [Full Speed] [Manual]
The following items appear only when Water Pump+ Profile is set to [Standard] , [Silent] ,
[Turbo] , or [Manual].
Water Pump+ Q-Fan Source
The assigned fan/pump will be controlled according to the selected temperature source.
Configuration options: [CPU] [MotherBoard] [VRM] [Chipset] [T_Sensor] [Water In T
Sensor] [Water Out T Sensor] [Multiple Sources]
Water Pump+ Step Up
Step up allows you to adjust how quickly the fan rotation speed increases, with level 0 being an instantaneous change in speed. The higher the level, the slower the change in speed, and may also result in less noise, but this will also cause slower heat dissipation.
Configuration options: [Level 0] [Level 1] [Level 2] [Level 3] [Level 4] [Level 5]
Water Pump+ Step Down
Step down allows you to adjust how quickly the fan rotation speed decreases, with level 0 being an instantaneous change in speed. The higher the level, the slower the change in speed, and may also result in less noise, but this will also cause slower heat dissipation.
Configuration options: [Level 0] [Level 1] [Level 2] [Level 3] [Level 4] [Level 5]
Water Pump+ Speed Low Limit
Allows you to set the lower speed limit for assigned fan/pump. A warning message will appear when the limit is reached; the warning message will not appear if [Ignore] is selected.
Configuration options: [Ignore] [200 RPM] [300 RPM] [400 RPM] [500 RPM] [600
RPM]
The following items appear only when Water Pump+ Profile is set to [Manual].
Water Pump+ Point4 Temperature
When the temperature source is lower than the temperature of P4, the duty cycle will be determined according to the P3-P4 and the temperature source. When the temperature source is higher than the temperature of P4, the fan will operate at the duty cycle of P4. Use the <+> or <-> keys to adjust the temperature.
ROG Z790 Series BIOS Manual
Water Pump+ Point4 Duty Cycle (%)
When the temperature source is lower than the temperature of P4, the duty cycle will be determined according to the P3-P4 and the temperature source. When the temperature source is higher than the temperature of P4, the fan will operate at the duty cycle of P4. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
Water Pump+ Point3 Temperature
When the temperature source is lower than the temperature of P3, the duty cycle will be determined according to the P2-P3 and the temperature source. When the temperature source is higher than the temperature of P3, the fan will operate at the duty cycle of P3-P4. Use the <+> or <-> keys to adjust the temperature.
Water Pump+ Point3 Duty Cycle (%)
When the temperature source is lower than the temperature of P3, the duty cycle will be determined according to the P2-P3 and the temperature source. When the temperature source is higher than the temperature of P3, the fan will operate at the duty cycle of P3-P4. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
Water Pump+ Point2 Temperature
When the temperature source is lower than the temperature of P2, the duty cycle will be determined according to the P1-P2 and the temperature source. When the temperature source is higher than the temperature of P2, the fan will operate at the duty cycle of P2-P3. Use the <+> or <-> keys to adjust the temperature.
Water Pump+ Point2 Duty Cycle (%)
When the temperature source is lower than the temperature of P2, the duty cycle will be determined according to the P1-P2 and the temperature source. When the temperature source is higher than the temperature of P2, the fan will operate at the duty cycle of P2-P3. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
Water Pump+ Point1 Temperature
When the temperature source is lower than the temperature of P1, the fan will operate at the duty cycle of P1. When the temperature source is higher than the temperature of P1, the duty cycle will be determined according to P1-P2 and the temperature source. Use the <+> or <-> keys to adjust the temperature.
Water Pump+ Point1 Duty Cycle (%)
When the temperature source is lower than the temperature of P1, the fan will operate at the duty cycle of P1. When the temperature source is higher than the temperature of P1, the duty cycle will be determined according to P1-P2 and the temperature source. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
AIO Pump Q-Fan Control
Allows you to set the AIO Pump operating mode.
[Auto Detect] Detects the type of installed fan/pump and automatically switches the control modes.
[DC Mode]
[PWM Mode]
Enables the Q-Fan Control feature in DC mode for 3-pin fan/pump.
Enables the Q-Fan Control feature in PWM mode for 4-pin fan/ pump.
ROG Z790 Series BIOS Manual 85
86
AIO Pump Profile
Allows you to set the appropriate performance level of the assigned fan/pump. When selecting [Manual] , we suggest raising your fan/pump duty to 100% if your CPU temperature exceeds 75 ° C. Please be noted CPU performance will throttle due to overheating with inefficient fan/pump duty.
Configuration options: [Standard] [Silent] [Turbo] [Full Speed] [Manual]
The following items appear only when AIO Pump Profile is set to [Standard] , [Silent] ,
[Turbo] , or [Manual].
AIO Pump Q-Fan Source
The assigned fan/pump will be controlled according to the selected temperature source.
Configuration options: [CPU] [MotherBoard] [VRM] [Chipset] [T_Sensor] [Water In T
Sensor] [Water Out T Sensor] [Multiple Sources]
AIO Pump Step Up
Step up allows you to adjust how quickly the fan rotation speed increases, with level 0 being an instantaneous change in speed. The higher the level, the slower the change in speed, and may also result in less noise, but this will also cause slower heat dissipation.
Configuration options: [Level 0] [Level 1] [Level 2] [Level 3] [Level 4] [Level 5]
AIO Pump Step Down
Step down allows you to adjust how quickly the fan rotation speed decreases, with level 0 being an instantaneous change in speed. The higher the level, the slower the change in speed, and may also result in less noise, but this will also cause slower heat dissipation.
Configuration options: [Level 0] [Level 1] [Level 2] [Level 3] [Level 4] [Level 5]
AIO Pump Speed Low Limit
Allows you to set the lower speed limit for assigned fan/pump. A warning message will appear when the limit is reached; the warning message will not appear if [Ignore] is selected.
Configuration options: [Ignore] [200 RPM] [300 RPM] [400 RPM] [500 RPM] [600
RPM]
The following items appear only when AIO Pump Profile is set to [Manual].
AIO Pump Point4 Temperature
When the temperature source is lower than the temperature of P4, the duty cycle will be determined according to the P3-P4 and the temperature source. When the temperature source is higher than the temperature of P4, the fan will operate at the duty cycle of P4. Use the <+> or <-> keys to adjust the temperature.
AIO Pump Point4 Duty Cycle (%)
When the temperature source is lower than the temperature of P4, the duty cycle will be determined according to the P3-P4 and the temperature source. When the temperature source is higher than the temperature of P4, the fan will operate at the duty cycle of P4. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
ROG Z790 Series BIOS Manual
AIO Pump Point3 Temperature
When the temperature source is lower than the temperature of P3, the duty cycle will be determined according to the P2-P3 and the temperature source. When the temperature source is higher than the temperature of P3, the fan will operate at the duty cycle of P3-P4. Use the <+> or <-> keys to adjust the temperature.
AIO Pump Point3 Duty Cycle (%)
When the temperature source is lower than the temperature of P3, the duty cycle will be determined according to the P2-P3 and the temperature source. When the temperature source is higher than the temperature of P3, the fan will operate at the duty cycle of P3-P4. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
AIO Pump Point2 Temperature
When the temperature source is lower than the temperature of P2, the duty cycle will be determined according to the P1-P2 and the temperature source. When the temperature source is higher than the temperature of P2, the fan will operate at the duty cycle of P2-P3. Use the <+> or <-> keys to adjust the temperature.
AIO Pump Point2 Duty Cycle (%)
When the temperature source is lower than the temperature of P2, the duty cycle will be determined according to the P1-P2 and the temperature source. When the temperature source is higher than the temperature of P2, the fan will operate at the duty cycle of P2-P3. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
AIO Pump Point1 Temperature
When the temperature source is lower than the temperature of P1, the fan will operate at the duty cycle of P1. When the temperature source is higher than the temperature of P1, the duty cycle will be determined according to P1-P2 and the temperature source. Use the <+> or <-> keys to adjust the temperature.
AIO Pump Point1 Duty Cycle (%)
When the temperature source is lower than the temperature of P1, the fan will operate at the duty cycle of P1. When the temperature source is higher than the temperature of P1, the duty cycle will be determined according to P1-P2 and the temperature source. Use the <+> or <-> keys to adjust the fan/pump duty cycle.
CPU Temperature LED Switch
Set this item to [Enabled] and the CPU_LED will light up to indicate high CPU temperature.
Configuration options: [Enabled] [Disabled]
ROG Z790 Series BIOS Manual 87
8. Boot menu
The Boot menu items allow you to change the system boot options.
88
CSM (Compatibility Support Module)
Allows you to configure the CSM (Compatibility Support Module) items to fully support the various VGA, bootable devices and add-on devices for better compatibility.
Launch CSM will be set to [Disabled] and cannot be configured when using the integrated graphics.
Launch CSM
[Enabled]
[Disabled]
For better compatibility, enable the CSM to fully support the non-
UEFI driver add-on devices or the Windows ® UEFI mode.
Disable the CSM to fully support the non-UEFI driver add-on devices or the Windows ® UEFI mode.
The following items appear only when Launch CSM is set to [Enabled] .
Boot Device Control
Allows you to select the type of devices that you want to boot.
Configuration options: [UEFI and Legacy OPROM] [Legacy OPROM only] [UEFI only]
Boot from Network Devices
Allows you to select the type of network devices that you want to launch.
Configuration options: [Ignore] [Legacy only] [UEFI only]
ROG Z790 Series BIOS Manual
Boot from Storage Devices
Allows you to select the type of storage devices that you want to launch.
Configuration options: [Ignore] [Legacy only] [UEFI only]
Boot from PCI-E/PCI Expansion Devices
Allows you to select the type of PCI-E/PCI expansion devices that you want to launch.
Configuration options: [Ignore] [Legacy only] [UEFI only]
Secure Boot
Allows you to configure the Windows ® Secure Boot settings and manage its keys to protect the system from unauthorized access and malwares during POST.
OS Type
[Windows UEFI Mode] This item allows you to select your installed operating system. Execute the Microsoft ® Secure Boot check. Only select this option when booting on Windows ® UEFI mode or other Microsoft ® Secure Boot compliant OS.
[Other OS] Get the optimized function when booting on Windows
Windows ® UEFI mode.
® non-UEFI mode. Microsoft ® Secure Boot only supports
The Microsoft secure boot can only function properly on Windows UEFI mode.
Secure Boot Mode
This option allows you to select the Secure Boot mode from between Standard or
Custom. In Custom mode, Secure Boot Policy variables can be configured by a physically present user without full authentication.
Configuration options: [Standard] [Custom]
The following item appears only when Secure Boot Mode is set to [Custom] .
Key Management
Install Default Secure Boot keys
Allows you to immediately load the default Security Boot keys, Platform key (PK), Keyexchange Key (KEK), Signature database (db), and Revoked Signatures (dbx). When the default Secure boot keys are loaded, the PK state will change from Unloaded mode to loaded mode.
Clear Secure Boot keys
This item appears only when you load the default Secure Boot keys. Allows you to clear all default Secure Boot keys.
Save all Secure Boot variables
Allows you to save all secure boot keys to a USB storage device.
PK Management
The Platform Key (PK) locks and secures the firmware from any permissible changes.
The system verifies the PK before your system enters the OS.
Save To File
Allows you to save the PK to a USB storage device.
ROG Z790 Series BIOS Manual 89
90
Set New key
Allows you to load the downloaded PK from a USB storage device.
Delete key
Allows you to delete the PK from your system. Once the PK is deleted, all the system’s
Secure Boot keys will not be active.
Configuration options: [Yes] [No]
The PK file must be formatted as a UEFI variable structure with time-based authenticated variable.
KEK Management
The KEK (Key-exchange Key or Key Enrollment Key) manages the Signature database (db) and Revoked Signature database (dbx).
Key-exchange Key (KEK) refers to Microsoft ® Secure Boot Key-Enrollment Key (KEK).
Save to file
Allows you to save the KEK to a USB storage device.
Set New key
Allows you to load the downloaded KEK from a USB storage device.
Append Key
Allows you to load the additional KEK from a storage device for an additional db and dbx loaded management.
Delete key
Allows you to delete the KEK from your system.
Configuration options: [Yes] [No]
The KEK file must be formatted as a UEFI variable structure with time-based authenticated variable.
DB Management
The db (Authorized Signature database) lists the signers or images of UEFI applications, operating system loaders, and UEFI drivers that you can load on the single computer.
Save to file
Allows you to save the db to a USB storage device.
Set New key
Allows you to load the downloaded db from a USB storage device.
Append Key
Allows you to load the additional db from a storage device for an additional db and dbx loaded management.
Delete key
Allows you to delete the db file from your system.
Configuration options: [Yes] [No]
The db file must be formatted as a UEFI variable structure with time-based authenticated variable.
ROG Z790 Series BIOS Manual
DBX Management
The dbx (Revoked Signature database) lists the forbidden images of db items that are no longer trusted and cannot be loaded.
Save to file
Allows you to save the dbx to a USB storage device.
Set New key
Allows you to load the downloaded dbx from a USB storage device.
Append Key
Allows you to load the additional dbx from a storage device for an additional db and dbx loaded management.
Delete key
Allows you to delete the dbx file from your system.
Configuration options: [Yes] [No]
The dbx file must be formatted as a UEFI variable structure with time-based authenticated variable.
Boot Configuration
Fast Boot
Allows you to enable or disable boot with initialization of a minimal set of devices required to launch active boot option. Has no effect for BBS boot options.
Configuration options: [Disabled] [Enabled]
The following item appears only when Fast Boot is set to [Enabled] .
Next Boot after AC Power Loss
[Normal Boot]
[Fast Boot]
Returns to normal boot on the next boot after an AC power loss.
Accelerates the boot speed on the next boot after an AC power loss.
Boot Logo Display
[Auto]
[Full Screen]
[Disabled]
Automatically adjust the boot logo size for Windows requirements.
Maximize the boot logo size.
Hide the logo during POST.
The following item appears only when Boot Logo Display is set to [Auto] or [Full
Screen] .
Post Delay Time
Allows you to select a desired additional POST waiting time to easily enter the BIOS
Setup. You can only execute the POST delay time during normal boot.
Configuration options: [0 sec] - [10 sec]
This feature only works when set under normal boot.
ROG Z790 Series BIOS Manual 91
92
The following item appears only when Boot Logo Display is set to [Disabled] .
Post Report
Allows you to select a desired POST report waiting time or until ESC is pressed.
Configuration options: [1 sec] - [10 sec] [Until Press ESC]
Boot up NumLock State
Allows you to select the keyboard NumLock state.
Configuration options: [On] [Off]
Wait For ‘F1’ If Error
Allows your system to wait for the <F1> key to be pressed when error occurs.
Configuration options: [Disabled] [Enabled]
Option ROM Messages
[Force BIOS]
[Keep Current]
The Option ROM Messages will be shown during the POST.
Only the ASUS logo will be shown during the POST.
Interrupt 19 Capture
Enable this item to allow the option ROMs to trap the interrupt 19.
Configuration options: [Enabled] [Disabled]
AMI Native NVMe Driver Support
Allows you to enable or disable AMI Native NVMe driver.
Configuration options: [Disabled] [Enabled]
Setup Mode
[Advanced Mode] This item allows you to go to Advanced Mode of the BIOS after
POST.
[EZ Mode] This item allows you to go to EZ Mode of the BIOS after POST.
Boot Sector (MBR/GPT) Recovery Policy
Allows you to set the Boot Sector Policy.
[Auto Recovery] Follow UEFI Rule.
[Local User Control] You can enter setup page and select Boot Sector (MBR/GPT)
Recovery Policy to recovery MBR/GPT on the next boot time.
The following item appears only when Boot Sector (MBR/GPT) Recovery Policy is set to
[Local User Control] .
Next Boot Recovery Action
Choose the (MBR/GPT) recovery action on the next boot.
Configuration options: [Skip] [Recovery]
Boot Option Priorities
These items specify the boot device priority sequence from the available devices. The number of device items that appears on the screen depends on the number of devices installed in the system.
• To access Windows ® supported).
OS in Safe Mode, press <F8 > after POST (Windows ® 8 not
• To select the boot device during system startup, press <F8> when ASUS Logo appears.
ROG Z790 Series BIOS Manual
Boot Override
These item displays the available devices. The number of device items that appear on the screen depends on the number of devices installed in the system. Click an item to start booting from the selected device.
ROG Z790 Series BIOS Manual 93
9. Tool menu
The Tool menu items allow you to configure options for special functions. Select an item then press <Enter> to display the submenu.
94
BIOS Image Rollback Support
[Enabled]
[Disabled]
Support roll back your BIOS to a previous version, but this setting violates the NIST SP 800-147 requirement.
Only support updating your BIOS to a newer version, and this setting meets the NIST SP 800-147 requirement.
Publish HII Resources
Configuration options: [Disabled] [Enabled]
The availability of the following items may vary according to your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
Flexkey
[Reset] Reboots the system.
[Aura On/Off] Enable or Disable Aura LEDs. This setting does not sync with the BIOS/ software option.
[DirectKey]
[Safe Boot]
Boot directly into the BIOS.
Force the system to reboot into the BIOS safe mode.
Setup Animator
Configuration options: [Disabled] [Enabled]
ROG Z790 Series BIOS Manual
9.1 ASUS EZ Flash 3 Utility
This item allows you to run ASUS EZ Flash 3. When you press <Enter>, a confirmation message appears. Use the left/right arrow key to select between [Yes] or [No], then press
<Enter> to confirm your choice.
For more details, refer to section ASUS EZ Flash 3 .
9.2 ASUS Secure Erase
SSD speeds may lower over time as with any storage medium due to data processing.
Secure Erase completely and safely cleans your SSD, restoring it to factory performance levels.
To launch Secure Erase, click Tool > ASUS Secure Erase on the Advanced mode menu.
• The time to erase the contents of your SSD may take a while depending on its size.
Do not turn off the system during the process.
• Secure Erase is only supported on Intel SATA port. For more information about Intel
SATA ports, refer to section Motherboard layout in your user manual.
Displays the available SSDs
Status definition:
• Frozen.
The frozen state is the result of a BIOS protective measure. The BIOS guards drives that do not have password protection by freezing them prior to booting.
If the drive is frozen, a power off or hard reset of your PC must be performed to proceed with the Secure Erase.
• Locked.
SSDs might be locked if the Secure Erase process is either incomplete or was stopped. This may be due to a third party software that uses a different password defined by ASUS. You have to unlock the SSD in the software before proceeding with Secure Erase.
ROG Z790 Series BIOS Manual 95
9.3 ASUS User Profile
This item allows you to store or load multiple BIOS settings.
96
Load from Profile
Allows you to load the previous BIOS settings saved in the BIOS Flash. Key in the profile number that saved your BIOS settings, press <Enter>, and then select Yes .
• DO NOT shut down or reset the system while updating the BIOS to prevent the system boot failure!
• We recommend that you update the BIOS file only coming from the same memory/
CPU configuration and BIOS version.
Profile Name
Allows you to key in a profile name.
Save to Profile
Allows you to save the current BIOS settings to the BIOS Flash, and create a profile. Key in a profile number from one to eight, press <Enter>, and then select Yes .
Load/Save Profile from/to USB Drive
Allows you to load or save profile from your USB drive, load and save profile to your USB drive.
ROG Z790 Series BIOS Manual
9.4 ASUS SPD Information
This item allows you to view the DRAM SPD information.
9.5 MemTest86
This item allows you to obtain a memory diagnosis.
The availability of this menu, as well as the settings and options may vary depending on your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
Activate MemTest86
Press <Enter> to open MemTest86 to perform and check testing results.
• Please save all changes made before using MemTest86.
• There will be a few seconds of loading time after pressing <Enter> on this option.
ROG Z790 Series BIOS Manual 97
98
9.6 ASUS Armoury Crate
This item allows you to enable or disable downloading and installing of the Armoury Crate app in the Windows ® OS. The Armoury Crate app can help you manage and download the latest drivers and utilities for your motherboard.
Download & Install ARMOURY CRATE app
Configuration options: [Disabled] [Enabled]
9.7 MyASUS
This item allows you to enable or disable downloading and installing of the MyASUS app in the Windows ® OS.
The availability of this menu, as well as the settings and options may vary depending on your motherboard. Please refer to the BIOS of your motherboard for the actual settings and options.
Download & Install MyASUS service & app
Configuration options: [Disabled] [Enabled]
ROG Z790 Series BIOS Manual
10. Exit menu
The Exit menu items allow you to load the optimal default values for the BIOS items, and save or discard your changes to the BIOS items. You can access the EZ Mode from the Exit menu.
Load Optimized Defaults
This option allows you to load the default values for each of the parameters on the Setup menus. When you select this option or if you press <F5>, a confirmation window appears.
Select OK to load the default values.
Save Changes & Reset
Once you are finished making your selections, choose this option from the Exit menu to ensure the values you selected are saved. When you select this option or if you press
<F10>, a confirmation window appears. Select OK to save changes and exit.
Discard Changes & Exit
This option allows you to exit the Setup program without saving your changes. When you select this option or if you press <Esc>, a confirmation window appears. Select Yes to discard changes and exit.
Launch EFI Shell from USB drives
This option allows you to attempt to launch the EFI Shell application (shellx64.efi) from one of the available filesystem devices.
ROG Z790 Series BIOS Manual 99
100
11. Updating BIOS
The ASUS website publishes the latest BIOS versions to provide enhancements on system stability, compatibility,and performance. However, BIOS updating is potentially risky. If there is no problem using the current version of BIOS, DO NOT manually update the BIOS.
Inappropriate BIOS updating may result to system’s failure to boot. Carefully follow the instructions in this chapter to update your BIOS when necessary.
Visit http://www.asus.com to download the latest BIOS file for this motherboard.
The following utilities allow you to manage and update the motherboard BIOS setup program.
1. ASUS EZ Flash 3: Updates the BIOS using a USB flash drive.
2. ASUS CrashFree BIOS 3: Restores the BIOS using the motherboard support DVD or a USB flash drive when the BIOS file fails or gets corrupted.
11.1 ASUS EZ Flash 3
ASUS EZ Flash 3 allows you to download and update to the latest BIOS using a USB drive.
To update the BIOS:
1. Insert the USB flash drive that contains the latest BIOS file to a USB port.
2. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select
ASUS EZ Flash 3 Utility and press <Enter>.
3. Press Left arrow key to switch to the Drive field.
4. Press the Up/Down arrow keys to find the USB flash drive that contains the latest
BIOS, and then press <Enter>.
5. Press Right arrow key to switch to the Folder Info field.
6. Press the Up/Down arrow keys to find the BIOS file, and then press <Enter> to perform the BIOS update process. Reboot the system when the update process is done.
ROG Z790 Series BIOS Manual
11.2 ASUS CrashFree BIOS 3
The ASUS CrashFree BIOS 3 utility is an auto recovery tool that allows you to restore the
BIOS file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using the motherboard support DVD or a USB flash drive that contains the BIOS file.
The BIOS file in the motherboard support DVD may be older than the BIOS file published on the ASUS official website. If you want to use the newer BIOS file, download the file at https://www.asus.com/support/ and save it to a USB flash drive.
Recovering the BIOS
To recover the BIOS:
1. Turn on the system.
2. Insert the motherboard support DVD to the optical drive, or the USB flash drive containing the BIOS file to the USB port.
3. The utility automatically checks the devices for the BIOS file. When found, the utility reads the BIOS file and enters ASUS EZ Flash 3 automatically.
4. The system requires you to enter BIOS Setup to recover the BIOS setting. To ensure system compatibility and stability, we recommend that you press <F5> to load default
BIOS values.
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause system boot failure!
ROG Z790 Series BIOS Manual 101
102 ROG Z790 Series BIOS Manual
Download
Public link updated
The public link to your chat has been updated. You may view and manage your chat links after registration here.
Document public link
Advertisement
Key features
- Intel LGA 1700 Intel® Celeron®, Intel® Core™ i3, Intel® Core™ i5, Intel® Core™ i7, Intel® Core™ i9, Intel® Pentium® Gold
- PC Extended ATX Intel Z790 Realtek ALC4082 7.1 channels
- DDR5-SDRAM 4 DIMM Non-ECC Maximum internal memory: 128 GB
- HDD & SSD M.2, SATA III RAID support Number of storage drives supported: 11
- BIOS type: UEFI AMI 512 Mbit Clear CMOS button
- 2.5 Gigabit Ethernet, 10 Gigabit Ethernet Wi-Fi Wi-Fi 6E (802.11ax) Bluetooth 5.3