Motherboard
P7P55D LE
E4882
First Edition V1
August 2009
Copyright © 2009 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.
ii
Contents
Contents....................................................................................................... iii
Notices.......................................................................................................... vi
Safety information...................................................................................... vii
About this guide........................................................................................ viii
P7P55D LE specifications summary.......................................................... ix
Chapter 1:
Product introduction
1.1
Before you proceed...................................................................... 1-1
1.2
Motherboard overview.................................................................. 1-2
1.2.1
Motherboard layout.......................................................... 1-2
1.2.2
Layout contents................................................................ 1-2
1.3
Central Processing Unit (CPU).................................................... 1-3
1.4
System memory............................................................................ 1-8
1.5
1.4.1
Overview.......................................................................... 1-8
1.4.2
Memory configurations..................................................... 1-9
Expansion slot............................................................................. 1-16
1.5.1
Installing an expansion card.......................................... 1-16
1.5.2
Configuring an expansion card...................................... 1-16
1.5.3
PCI slots......................................................................... 1-16
1.6
Jumpers....................................................................................... 1-17
1.7
MemOK! switches....................................................................... 1-18
1.8
Connectors.................................................................................. 1-19
1.8.1
Rear panel connectors................................................... 1-19
1.8.2
Internal connectors........................................................ 1-20
1.9
Installing an operating system.................................................. 1-26
1.10
Support DVD information........................................................... 1-26
1.10.1
Chapter 2:
2.1
2.2
Running the support DVD.............................................. 1-26
BIOS setup
2-1
Managing and updating your BIOS............................................. 2-1
2.1.1
ASUS Update................................................................... 2-1
2.1.2
ASUS EZ Flash 2............................................................. 2-2
2.1.3
ASUS CrashFree BIOS 3 utility....................................... 2-3
BIOS setup program..................................................................... 2-4
Entering BIOS Setup at startup....................................................... 2-4
Entering BIOS Setup after POST.................................................... 2-4
iii
Contents
2.3
2.4
2.5
2.6
iv
Main menu..................................................................................... 2-4
2.3.1
SATA 1-6.......................................................................... 2-5
2.3.2
Storage Configuration...................................................... 2-6
2.3.3
AHCI Configuration.......................................................... 2-7
2.3.4
System Information.......................................................... 2-8
Ai Tweaker menu........................................................................... 2-9
2.4.1
Ai Overclock Tuner ....................................................... 2-10
2.4.2
CPU Ratio Setting . ....................................................... 2-10
2.4.3
Intel(R) SpeedStep(TM) Tech ....................................... 2-10
2.4.4
Intel(R) TurboMode Tech .............................................. 2-10
2.4.5
Xtreme Phase Full Power Mode ....................................2-11
2.4.6
DRAM Frequency ..........................................................2-11
2.4.7
QPI Frequency . .............................................................2-11
2.4.8.
DRAM Timing Control ....................................................2-11
2.4.9
CPU Differential Amplitude ........................................... 2-13
2.4.10
CPU Clock Skew .......................................................... 2-13
2.4.11
CPU Voltage Mode........................................................ 2-13
2.4.12
IMC Voltage ................................................................. 2-14
2.4.13
DRAM Voltage ............................................................. 2-14
2.4.14
CPU PLL Voltage .......................................................... 2-14
2.4.15
PCH Voltage ................................................................. 2-14
2.4.16
DRAM DATA REF Voltage on CHA/B ........................... 2-14
2.4.17
Load-Line Calibration . .................................................. 2-15
2.4.18
CPU Spread Spectrum ................................................. 2-15
2.4.19
PCIE Spread Spectrum ................................................ 2-15
Advanced menu.......................................................................... 2-16
2.5.1
CPU Configuration......................................................... 2-16
2.5.2
North Bridge Configuration............................................ 2-18
2.5.3
Onboard Devices Configuration..................................... 2-19
2.5.4
USB Configuration......................................................... 2-20
2.5.5
PCIPnP.......................................................................... 2-21
2.5.6
Intel VT-d ...................................................................... 2-21
Power menu................................................................................. 2-21
2.6.1
Suspend Mode . ............................................................ 2-21
2.6.2
Repost Video on S3 Resume......................................... 2-22
2.7
2.8
2.9
2.6.3
ACPI 2.0 Support .......................................................... 2-22
2.6.4
ACPI APIC Support . ..................................................... 2-22
2.6.5
EuP Ready . .................................................................. 2-22
2.6.6
APM Configuration......................................................... 2-22
2.6.7
Hardware Monitor.......................................................... 2-24
Boot menu................................................................................... 2-25
2.7.1
Boot Device Priority....................................................... 2-25
2.7.2
Boot Settings Configuration........................................... 2-26
2.7.3
Security.......................................................................... 2-26
Tools menu.................................................................................. 2-28
2.8.1
ASUS O.C. Profile.......................................................... 2-28
2.8.2
AI NET 2........................................................................ 2-29
2.8.3
Express Gate ................................................................ 2-29
Exit menu..................................................................................... 2-30
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
•
This device may not cause harmful interference, and
•
This device must accept any interference received including interference that may cause
undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
•
Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required
to assure compliance with FCC regulations. Changes or modifications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://green.asus.com/english/REACH.htm.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.
vi
Safety information
Electrical safety
•
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
•
When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
•
Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
•
Seek professional assistance before using an adpater or extension cord. These devices
could interrupt the grounding circuit.
•
Make sure that your power supply is set to the correct voltage in your area. If you are
not sure about the voltage of the electrical outlet you are using, contact your local power
company.
•
If the power supply is broken, do not try to fix it by yourself. Contact a qualified service
technician or your retailer.
•
The optical S/PDIF is an optional component (may or may not be included in your
motherboard) and is defined as a CLASS 1 LASER PRODUCT.
INVISIBLE LASER RADIATION, AVOID EXPOSURE TO BEAM.
•
Never dispose of the battery in fire. It could explode and release harmful substances into
the environment.
• Never dispose of the battery with your regular household waste. Take it to a hazardous
material collection point.
• Never replace the battery with an incorrect battery type.
• RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
• DISPOSE OF USED BATTERIES ACCORDING TO THE ABOVE BATTERY-RELATED
INSTRUCTIONS.
Operation safety
•
Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
•
Before using the product, make sure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
•
To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
•
Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
•
Place the product on a stable surface.
•
If you encounter technical problems with the product, contact a qualified service
technician or your retailer.
vii
About this guide
This user guide contains the information you need when installing and configuring the
motherboard.
How this guide is organized
This guide contains the following parts:
•
Chapter 1: Product introduction
•
This chapter describes the features of the motherboard and the new technology it
supports.
Chapter 2: BIOS information
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.
Where to find more information
Refer to the following sources for additional information and for product and software
updates.
1. ASUS websites
2.
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.
Optional documentation
Your product package may include optional documentation, such as warranty flyers,
that may have been added by your dealer. These documents are not part of the
standard package.
Conventions used in this guide
To make sure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to complete a task.
CAUTION: Information to prevent damage to the components when trying to complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
Typography
Bold text
Italics
<Key>
<Key1>+<Key2>+<Key3>
viii
Indicates a menu or an item to select.
Used to emphasize a word or a phrase.
Keys enclosed in the less-than and greater-than sign means
that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).
Example: <Ctrl>+<Alt>+<D>
P7P55D LE specifications summary
CPU
LGA1156 socket for Intel® Core™ i7/ Core™ i5 Processors
Supports Intel® Turbo Boost Technology
* Refer to www.asus.com for Intel CPU support list
Chipset
Intel® P55 Express Chipset
Memory
4 x DIMM, max. 16GB, DDR3 2000(O.C.)* / 1600 / 1333 / 1066 MHz, non-ECC, un-buffered memory
Dual channel memory architecture
* Supports Intel® Extreme Memory Profile (XMP)
** Hyper DIMM support is subject to the physical characteristics of individual CPUs.
*** Refer to www.asus.com or this user manual for the Memory QVL (Qualified Vendors Lists)
Expansion Slots
1 x PCI Express 2.0 x16 slot (single at x16)
1 x PCI Express 2.0 x16 slot (at x4 mode 2.5GT/s)
2 x PCI Express 2.0 x1 slots (2.5GT/s)
3 x PCI slots
Multi-GPU Support
Supports ATI® Quad-GPU CrossFireX™ Technology
Storage
Intel® P55 Express Chipset:
- 6 x SATA 3.0 Gb/s ports
- Intel® Matrix Storage supporting SATA RAID 0,1, 5, and 10
JMicron® JMB361 controller:
- 1 x External SATA 3.0 Gb/s port at rear panel
- 1 x Ultra DMA 133/100/66 for up to 2 PATA devices
LAN
Realtek® 8112L Gigabit LAN controller featuring AI NET2
USB
14 x USB 2.0 ports (6 ports at mid-board, 8 ports at rear panel)
Audio
VIA® VT1828S 8-channel High Definition Audio CODEC
- Absolute Pitch BD 192/24
- DTS Surround Sensation UltraPC
- BD audio layer Content Protection
- Support Jack-Detection, Multi-Streaming, and Front Panel Jack-Retasking
- Optical S/PDIF out port at back I/O
(continued on the next page)
ix
P7P55D LE specifications summary
ASUS Unique Features
ASUS 8+2 Phase Power Design
ASUS Xtreme Design
ASUS Exclusive Overclocking Features:
- ASUS TurboV
- ASUS Turbo Key
ASUS Exclusive Features:
- MemOK!
- ASUS EPU
- Express Gate
ASUS Quiet Thermal Solution:
- ASUS Fanless Design: Stylish Heatsink Solution
- ASUS Fanless Design: Stack Cool 3
- ASUS Fan Xpert
ASUS Crystal Sound:
- ASUS Noise Filter
ASUS EZ DIY:
- ASUS Q-DIMM
- ASUS Q-Shield
- ASUS Q-Connector
- ASUS O.C. Profile
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 2
- ASUS My Logo 2
- Multi-language BIOS
ASUS Exclusive
Overclocking Features
Precision Tweaker:
- vCore: Adjustable CPU voltage at 0.00625V increment
- vIMC: Adjustable IMC voltage at 0.05V increment
- vDRAM Bus: 8-step DRAM voltage control
- vPCH: 2-step chipset voltage control
- vCPU PLL: 4-step reference voltage control
SFS (Stepless Frequency Selection):
- Internal Base Clock tuning from 80 MHz up to 500 MHz at 1MHz increment
- PCI Express frequency tuning from 100MHz up to 200MHz at 1MHz increment
Overclocking Protection:
- ASUS C.P.R.(CPU Parameter Recall)
Back Panel I/O Ports
1 x PS/2 keyboard port (Purple)
1 x PS/2 mouse port (Green)
1 x S/PDIF Out (Optical)
1 x RJ45 port
8 x USB 2.0/1.1
1 x eSATA port
8-channel Audio I/O
(continued on the next page)
P7P55D LE specifications summary
Internal I/O Connectors
3 x USB connectors support additional 6 USB ports
1 x IDE connector
6 x SATA connectors
1 x CPU Fan connector
2 x Chassis Fan connectors (1 x 4-pin, 1 x 3-pin)
1 x Power Fan connector
1 x Front panel audio connector
1 x S/PDIF Out header
1 x CD audio in
1 x 24-pin ATX Power connector
1 x 8-pin EATX 12V Power connector
1 x System Panel (Q-Connector)
1 x MemOK! button
1 x COM connector
BIOS Features
16 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0, SM
BIOS 2.5, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash
2, ASUS CrashFree BIOS 3
Manageability
WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE
Accessories
1 x UltraDMA 133/100 cable
2 x Serial ATA 3.0Gb/s cables
ASUS Q-Shield
User's manual
2 in 1 Q-connector
Support DVD Contents
Drivers
ASUS Utilities
ASUS Update
Anti-virus software (OEM version)
Form Factor
ATX Form Factor, 12”x 8.6” (30.5cm x 21.8cm)
*Specifications are subject to change without notice.
xi
xii
Chapter 1
Product introduction
Thank you for buying an ASUS® P7P55D LE motherboard!
Before you start installing the motherboard, and hardware devices on it, check the items in
your motherboard package. Refer to page ix for the list of accessories.
If any of the items is damaged or missing, contact your retailer.
1.1
Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due to
static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
• Before you install or remove any component, ensure that the ATX power supply is
switched off or the power cord is detached from the power supply. Failure to do so may
cause severe damage to the motherboard, peripherals, or components.
Onboard LED
The motherboard comes with a standby power LED that lights up to indicate that the system
is ON, in sleep mode, or in soft-off mode. This is a reminder that you must shut down
the system and unplug the power cable before removing or plugging in any motherboard
component. The illustration below shows the location of the onboard LED.
ASUS P7P55D LE
1-1
1.2
Motherboard overview
1.2.1
Motherboard layout
Ensure that you install the motherboard into the chassis in the correct orientation. The edge
with external ports goes to the rear part of the chassis.
Place this side towards
the rear of the chassis.
Place six screws into the holes indicated by circles to secure the motherboard to the
chassis. DO NOT overtighten the screws! Doing so can damage the motherboard.
1.2.2
Layout contents
Connectors/Jumpers/Slots/LED
Page
1.
ATX power connectors (24-pin EATXPWR, 8-pin
EATX12V)
1-20
2.
LGA1156 CPU Socket
1-3
Connectors/Jumpers/Slots/LED
Page
9.
System panel connector (20-8 pin PANEL)
1-22
10.
Clear RTC RAM (3-pin CLRTC)
1-17
1-23
3.
DDR3 DIMM slots
1-8
11.
USB connectors (10-1 pin USB910,
USB1112, USB1314)
4.
CPU, chassis, and power fan connectors (4-pin
CPU_FAN, 4-pin CHA_FAN1, 3-pin CHA_FAN2,
3-pin PWR_FAN)
1-20
12.
Digital audio connector (4-1 pin
SPDIF_OUT)
1-24
5.
MemOK! switch
1-18
13.
Optical drive audio connector (4-pin CD)
1-24
6.
JMicron® JMB361 IDE Connector (40-1 pin
PRI_IDE [Blue])
1-25
14.
Front panel audio connector (10-1 pin
AAFP)
1-21
7.
Onboard LED
1-1
15.
Serial port connector (10-1 pin COM1)
1-23
8.
Intel® P55 Serial ATA connectors (7-pin SATA
1-6)
1-21
* Optional
1-2
Chapter 1: Product introduction
1.3
Central Processing Unit (CPU)
The motherboard comes with a surface mount LGA1156 socket designed for the Intel® Core™
i7 / Core™ i5 Processors.
Ensure that all power cables are unplugged before installing the CPU.
1.3.1
•
Upon purchase of the motherboard, ensure that the PnP cap is on the socket and
the socket contacts are not bent. Contact your retailer immediately if the PnP cap
is missing, or if you see any damage to the PnP cap/socket contacts/motherboard
components. ASUS will shoulder the cost of repair only if the damage is shipment/
transit-related.
•
Keep the cap after installing the motherboard. ASUS will process Return Merchandise
Authorization (RMA) requests only if the motherboard comes with the cap on the
LGA1156 socket.
•
The product warranty does not cover damage to the socket contacts resulting from
incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP
cap.
Installing the CPU
To install a CPU:
1.
Locate the CPU socket on the motherboard.
2.
Press the load lever with your thumb (A),
and then move it to the right (B) until it is
released from the retention tab.
Load lever
A
B
To prevent damage to the socket pins,
do not remove the PnP cap unless you
are installing a CPU.
ASUS P7P55D LE
Retention tab
1-3
3.
Lift the load lever in the direction of the
arrow until the load plate is completely
lifted.
Load plate
4.
Remove the PnP cap from the CPU
socket.
PnP cap
5.
Position the CPU over the socket,
ensuring that the gold triangle is on the
bottom‑left corner of the socket, and then
fit the socket alignment keys into the CPU
notches.
The CPU fits in only one correct
orientation. DO NOT force the CPU
into the socket to prevent bending
the connectors on the socket and
damaging the CPU!
CPU notches
Gold
triangle
mark
Alignment keys
1-4
Chapter 1: Product introduction
6.
Apply some Thermal Interface Material
to the exposed area of the CPU that the
heatsink will be in contact with, ensuring
that it is spread in an even thin layer.
Some heatsinks come with pre-applied
thermal paste. If so, skip this step.
The Thermal Interface Material is
toxic and inedible. DO NOT eat it. If
it gets into your eyes or touches your
skin, wash it off immediately, and seek
professional medical help.
7.
Close the load plate (A), and then push
down the load lever (B), ensuring that
the front edge of the load plate slides
under the retention knob (C).
B
A
C
8.
Insert the load lever under the retention
tab.
ASUS P7P55D LE
1-5
1.3.2
Installing the CPU heatsink and fan
The Intel® LGA1156 processor requires a specially designed heatsink and fan assembly to
ensure optimum thermal condition and performance.
•
When you buy a boxed Intel® processor, the package includes the CPU fan and
heatsink assembly. If you buy a CPU separately, ensure that you use only
Intel®‑certified multi‑directional heatsink and fan.
•
Your Intel® LGA1156 heatsink and fan assembly comes in a push-pin design and
requires no tool to install.
•
Use an LGA1156-compatible CPU heatsink and fan assembly only. The LGA1156
socket is incompatible with the LGA775 and LGA1366 sockets in size and dimension.
If you purchased a separate CPU heatsink and fan assembly, ensure that the Thermal
Interface Material is properly applied to the CPU heatsink or CPU before you install the
heatsink and fan assembly.
Ensure that you have installed the motherboard to the chassis before you install the CPU
fan and heatsink assembly.
To install the CPU heatsink and fan:
1.
Place the heatsink on top of the installed
CPU, making sure that the four fasteners
match the holes on the motherboard.
2.
Push down two fasteners at a time in
a diagonal sequence to secure the
heatsink and fan assembly in place.
A
A
B
B
A
B
1
B
A
1
Orient the heatsink and fan assembly such that the CPU fan cable is closest to the CPU fan
connector.
1-6
Chapter 1: Product introduction
3.
Connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
1.3.3
Uninstalling the CPU heatsink and fan
To uninstall the CPU heatsink and fan:
1. Disconnect the CPU fan cable from the
connector on the motherboard.
2.
Rotate each fastener counterclockwise.
3.
Pull up two fasteners at a time in a
diagonal sequence to disengage the
heatsink and fan assembly from the
motherboard.
4.
A
B
B
A
A
B
B
A
Carefully remove the heatsink and fan assembly from the motherboard.
ASUS P7P55D LE
1-7
1.4
System memory
1.4.1
Overview
The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched
differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for
better performance with less power consumption.
The figure illustrates the location of the DDR3 DIMM sockets:
Recommended memory configurations
One DIMM:
Install one memory module in slot A1 or B1 first as a single-channel operation.
Two DIMMs (dual-channel operation):
Four DIMMs (dual-channel operation):
1-8
Chapter 1: Product introduction
1.4.2
Memory configurations
You may install 1GB, 2GB and 4GB unbuffered and non‑ECC DDR3 DIMMs into the DIMM
sockets.
•
You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel configuration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
•
Due to Intel spec definition, X.M.P. DIMMs are supported for one DIMM per channel
only.
•
According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect
the CPU.
•
According to Intel CPU spec, CPUs with a core frequency of 2.66G support the
maximum DIMM frequency of up to DDR3-1333. To use DIMMs of a higher frequency
with a 2.66G CPU, enable the DRAM O.C. Profile feature in BIOS. Refer to section 2.4
Ai Overclock Tuner for details.
•
Always install DIMMs with the same CAS latency. For optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
•
Due to the memory address limitation on 32-bit Windows OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
- Use a maximum of 3GB system memory if you are using a 32-bit Windows OS.
- Install a 64-bit Windows OS when you want to install 4GB or more on the
motherboard.
For more details, refer to the Microsoft® support site at
http://support.microsoft.com/kb/929605/en-us.
•
This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less
(Memory chip capacity counts in Megabit, 8 Megabit/Mb = 1 Megabyte/MB).
•
The default memory operation frequency is dependent on its Serial Presence Detect
(SPD), which is the standard way of accessing information from a memory module.
Under the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value. To operate at the vendor-marked or at
a higher frequency, refer to section Ai Tweaker menu for manual memory frequency
adjustment.
•
For system stability, use a more efficient memory cooling system to support a full
memory load (4 DIMMs) or overclocking condition.
ASUS P7P55D LE
1-9
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1067MHz
capability for CPU at 2.66, 2.8 and 2.93GHz
Vendor
Part No.
Size
SS/ Chip
DS Brand
Chip NO.
Timing
Lable(Bios)
CORSAIR
Crucial
Crucial
Crucial
Crucial
Crucial
Crucial
ELPIDA
ELPIDA
ELPIDA
ELPIDA
Hynix
Hynix
Hynix
Hynix
KINGSTON
KINGSTON
KINGSTON
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
CM3X1024-1066C7
CT12864BA1067.8FF
CT12864BA1067.8SFD
CT12872BA1067.9FF
CT25664BA1067.16FF
CT25664BA1067.16SFD
CT25672BA1067.18FF
EBJ10UE8BAW0-AE-E
EBJ11RD8BAFA-AE-E
EBJ11UD8BAFA-AG-E
EBJ21UE8BAW0-AE-E
HMT112U6AFP8C-G7N0
HYMT112U64ZNF8-G7
HMT125U6AFP8C-G7N0
HYMT125U64ZNF8-G7
KVR1066D3N7/1G
KVR1066D3N7/2G
KVR1066D3N7/4G
MT8JTF12864AY-1G1D1
MT8JTF12864AZ-1G1F1
MT8JTF12864AZ-1G1F1
MT9JSF12872AZ-1G1F1
MT16JTF25664AY-1G1D1
MT16JTF25664AZ-1G1F1
MT16JTF25664AZ-1G1F1
MT18JSF25672AZ-1G1F1
1024MB
1024MB
1024MB
1024MB
2048MB
2048MB
2048MB
1024MB
1024MB
1024MB
2048MB
1024MB
1024MB
2048MB
2048MB
1024MB
2048MB
4096MB
1024MB
1024MB
1024MB
1024MB
2048MB
2048MB
2048MB
2048MB
DS
SS
SS
SS
DS
DS
DS
SS
DS
DS
DS
SS
SS
DS
DS
SS
DS
DS
SS
SS
SS
SS
DS
DS
DS
DS
Heat-Sink Package
D9KPT
D9JNL
D9KPT(ECC)
D9KPT
D9JNL
D9KPT(ECC)
J1108BABG-DJ-E
J5308BASE-AC-E(ECC)
J5308BASE-AC-E
J1108BABG-DJ-E
H5TQ1G83AFPG7C
HY5TQ1G831ZNFP-G7
H5TQ1G83AFPG7C
HY5TQ1G831ZNFP-G7
J1108BABG-DJ-E
J1108BABG-DJ-E
K4B2G0846B-HCF8
7VD22
8ZF22 D9KPV
D9KPT
D9KPT(ECC)
7VD22
8ZF22 D9KPV
D9KPT
D9KPT(ECC)
7
7(1066-7-7-7-20)
7
7(1066-9-9-9-25)
7(1066-7-7-7-20)
7
7(1066-7-7-7-20)
7(1066-7-7-7-20)
7
8
7(1066-7-7-7-20)
7
7
7
7
1066-7-7-7-20
1066-7-7-7-20
1066-7-7-7-20
7
7(1066-7-7-7-20)
7(1066-7-7-7-20)
7(1066-9-9-9-25)
7
7(1066-7-7-7-20)
7(1066-7-7-7-20)
7(1066-7-7-7-20)
DIMM socket
Voltage support (Optional)
A*
B*
C*
1.1
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1.5
•
•
•
1.5
•
•
•
1.5
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1.5
N/A
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
ELPIDA
ELPIDA
ELPIDA
ELPIDA
HYNIX
HYNIX
HYNIX
HYNIX
ELPIDA
ELPIDA
SAMSUNG
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
SAMSUNG M378B5273BH1-CF8
4096MB DS
SAMSUNG K4B2G0846B-HCF8
8(7-7-7-20)
Transcend
Asint
Asint
WINTEC
2048MB
1024MB
2048MB
1024MB
ELPIDA
Asint
Asint
Qimonda
7(1066-7-7-7-20)
(7-7-7-20)
(7-7-7-20)
7
TS256MLK64V1U
SLY3128M8-EAE
SLZ3128M8-EAE
3DU3191A-10
DS
SS
DS
DS
J1108BABG-AE-E
DDRIII1208-AE
DDRIII1208-AE
IDSH51-03A1F1C-10F
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1333MHz
capability for CPU at 2.66, 2.8 and 2.93GHz
Part No.
Size
SS/ Chip
DS Brand
Chip NO.
A-DATA
A-DATA
A-DATA
AD133301GOU
AD1333002GOU
AD31333E002G0U
SS
DS
DS
A-DATA
A-DATA
N/A
AD30908C8D-15IG
AD30908C8D-15IG
Heat-Sink Package
Apacer
Apacer
Apacer
78.01GC6.420
78.01GC6.9L0
78.01GC8.422
1024MB
2048MB
6144MB(Kit of
3)
1024MB
1024MB
1024MB
SS
SS
SS
ELPIDA
Apacer
ELPIDA
(1333-9-9-9-24)
9(1333-9-9-9-24)
(1333-9-9-9-24)
•
•
•
•
•
•
•
•
Apacer
Apacer
Apacer
78.A1GC6.421
78.A1GC6.9L1
78.A1GC8.423
2048MB
2048MB
2048MB
DS
DS
DS
ELPIDA
Apacer
ELPIDA
(1333-9-9-9-24)
9(1333-9-9-9-24)
(1333-9-9-9-24)
•
•
•
•
•
•
•
•
•
CORSAIR
SS
N/A
9-9-9-24(1333-9-9-9-24) 1.5
•
•
•
DS
N/A
Heat-Sink Package
(1333-9-9-9-24)
•
•
DS
N/A
Heat-Sink Package
9-9-9-24(1066-7-7-7-20) 1.70
•
•
DS
N/A
Heat-Sink Package
9-9-9-24(1066-7-7-7-20) 1.70
•
•
DS
N/A
Heat-Sink Package
9-9-9-24(1333-9-9-9-24) 1.5
•
•
•
Crucial
Crucial
TR3X3G1333C9 (Ver2.1) 3072MB(Kit of
3)
CM3X1024-1333C9DHX 1024MB
BoxP/N:TWIN3X20481333C9
2048MB(Kit of
(CM3X10242)
1333C9)Ver1.1
BoxP/N:
TW3X4G1333C9DHX
4096MB(Kit of
(CM3X20482)
1333C9DHX)Ver3.2
TR3X6G1333C9 (Ver2.1) 6144MB(Kit of
3)
CT12864BA1339.8FF
1024MB
CT12864BA1339.8SFD 1024MB
J1108BABG-DJ-E
AM5D5808AEWSBG
J1108BABG-DJE(ECC)
J1108BABG-DJ-E
AM5D5808AEWSBG
J1108BABG-DJE(ECC)
Heat-Sink Package
SS
SS
9(1333-9-9-9-24)
(1333-9-9-9-24)
•
•
•
•
•
•
Crucial
Crucial
CT12872BA1339.9FF
CT25664BA1339.16FF
SS
DS
MICRON D9KPT
MICRON MT8JF12864AY1G4D1
MICRON D9KPT(ECC)
MICRON D9KPT
9(1333-9-9-9-24)
9(1333-9-9-9-24)
•
•
•
•
•
•
CORSAIR
CORSAIR
CORSAIR
CORSAIR
1-10
DIMM socket
support
(Optional)
A*
B*
C*
1333-9-9-9-24
•
•
•
1333-9-9-9-24
•
•
•
7-7-7-20(1333-9-9-9-24) 1.65-1.85 •
•
•
Vendor
1024MB
2048MB
Timing
Dimm(Bios)
Voltage
1.1
Chapter 1: Product introduction
•
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1333MHz
capability for CPU at 2.66, 2.8 and 2.93GHz (continued)
Vendor
Part No.
Size
SS/ Chip Brand Chip NO.
DS
Timing
Dimm(Bios)
Crucial
Crucial
ELPIDA
ELPIDA
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
GEIL
Hynix
Hynix
Hynix
CT25672BA1339.18FF
BL25664BA1336.16SFB1
EBJ10UE8BAW0-DJ-E
EBJ21UE8BAW0-DJ-E
F3-10600CL7D-2GBPI
F3-10600CL8D-2GBHK
F3-10666CL7T-6GBPK(XMP)
F3-10666CL8D-4GBHK(XMP)
F3-10666CL9T-6GBNQ
GV34GB1333C7DC
HMT112U6BFR8C-H9
HMT125U6BFR8C-H9
HMT125U6BFR8C-H9
2048MB
4096MB(Kit of 2)
1024MB
2048MB
2048MB(Kit of 2)
2048MB(Kit of 2)
2048MB
4096MB(Kit of 2)
6144MB(Kit of 3)
4096MB(Kit of 2)
1024MB
2048MB
2048MB
DS
DS
SS
DS
SS
SS
DS
DS
DS
DS
SS
DS
DS
MICRON
NA
ELPIDA
ELPIDA
N/A
N/A
N/A
N/A
N/A
N/A
Hynix
Hynix
Hynix
D9KPT(ECC)
Heat-Sink Package
J1108BABG-DJ-E
J1108BABG-DJ-E
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
H5TQ1G83BFR
H5TQ1G83BFR
H5TQ1G83BFRH9C
9(1333-9-9-9-24)
6-6-6-20(1333-9-9-9-24)
9(1333-9-9-9-24)
9(1333-9-9-9-24)
(1337-7-7-7-18)
(1337-8-8-8-22)
7-7-7-18(1333-7-7-7-18)
8-8-8-21(1333-7-7-7-20)
9-9-9-24(1333-9-9-9-24)
7-7-7-24(1333-8-8-8-28)
9(1333-9-9-9-24)
9(1333-9-9-9-24)
9(1333-9-9-9-24)
KINGMAX
KINGSTON
KINGSTON
KINGSTON
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
OCZ
OCZ
OCZ
OCZ
OCZ
OCZ
OCZ
OCZ
SAMSUNG
SAMSUNG
SAMSUNG
SAMSUNG
SAMSUNG
SAMSUNG
SAMSUNG
Super
Talent
Transcend
Transcend
Asint
Asint
Asint
Asint
ASUS
BUFFALO
BUFFALO
BUFFALO
Patriot
Patriot
Patriot
Patriot
Patriot
Silicon
Power
Silicon
Power
FLFD45F-B8EE9
KVR1333D3N9/1G
KVR1333D3N9/2G
KVR1333D3N9/2G
MT8JTF12864AY-1G4BYES
MT8JTF12864AZ-1G4F1
MT8JTF12864AZ-1G4F1
MT9JSF12872AZ-1G4F1
MT16JF25664AZ-1G4F1
MT16JTF25664AZ-1G4F1
MT18JSF25672AZ-1G4F1
OCZ3RPX1333EB2GK
OCZ3G1333LV3GK
OCZ3P1333LV3GK
OCZ3P13332GK
OCZ3P13334GK
OCZ3G1333LV6GK
OCZ3P1333LV6GK
OCZX1333LV6GK(XMP)
M378B2873DZ1-CH9
M378B2873EH1-CH9
M391B2873DZ1-CH9
M378B5673DZ1-CH9
M378B5673EH1-CH9
M391B5673DZ1-CH9
M378B5273BH1-CH9
W1333UX2GB(XMP)
1024MB
1024MB
2048MB
2048MB
1024MB
1024MB
1024MB
1024MB
2048MB
2048MB
2048MB
1024MB
3072MB(Kit of 3)
3072MB(Kit of 3)
1024MB
4096MB(Kit of 2)
6144MB(Kit of 3)
6144MB(Kit of 3)
6144MB(Kit of 3)
1024MB
1024MB
1024MB
2048MB
2048MB
2048MB
4096MB
2048MB(Kit of 2)
SS
SS
DS
DS
SS
SS
SS
SS
DS
DS
DS
SS
SS
SS
DS
DS
DS
DS
DS
SS
SS
SS
DS
DS
DS
DS
SS
ELPIDA
ELPIDA
ELPIDA
ELPIDA
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
MICRON
N/A
N/A
N/A
N/A
N/A
N/A
N/A
NA
SAMSUNG
SAMSUNG
SAMSUNG
SAMSUNG
SAMSUNG
SAMSUNG
SAMSUNG
N/A
J1108BASE-DJ-E
J1108BABG-DJ-E
J1108BABG-DJ-E
J1108BABG-DJ-E
Z9HWR
9FF22 D9KPT
D9KPT
D9KPT(ECC)
D9KPT
9FF22 D9KPT
D9KPT(ECC)
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
K4B1G0846D
K4B1G0846E
K4B1G0846D(ECC)
K4B1G0846D
K4B1G0846E
K4B1G0846D(ECC)
K4B2G0846B-HCH9
Heat-Sink Package
(1333-9-9-9-24)
9(1066-8-7-7-20)
1333-9-9-9-24
9(1066-8-7-7-20)
(1333-9-9-9-24)
9(1066-8-8-8-20)
9(1333-9-9-9-24)
9(1333-9-9-9-24)
9(1333-9-9-9-24)
9(1066-8-8-8-20)
9(1333-9-9-9-24)
(1066-6-5-5-20)
9-9-9(1066-7-7-7-20)
7-7-7(1066-7-7-7-16)
7-7-7-20(1333-9-9-9-24)
7(1333-7-7-7-20)
9-9-9(1066-7-7-7-20)
7-7-7(1066-7-7-7-20)
8-8-8(1066-7-7-7-16)
9(1333-9-9-9-24)
1066-8-7-7-20
9(1333-9-9-9-24)
9(1333-9-9-9-24)
1066-8-7-7-20
9(1333-9-9-9-24)
9(1333-9-9-9-24)
8(1333-8-8-8-24)
TS128MLK64V3U
TS256MLK64V3U
SLY3128M8-EDJ
SLY3128M8-EDJE
SLZ3128M8-EDJ
SLZ3128M8-EDJE
N/A
FSX1333D3G-1G
FSH1333D3G-T3G(XMP)
FSX1333D3G-2G
PDC32G1333LLK
PVT33G1333ELK
PVS34G1333ELK
PVS34G1333LLK
PVT36G1333ELK
1024MB
2048MB
1024MB
1024MB
2048MB
2048MB
1024MB
1024MB
3072MB(Kit of 3)
2048MB
1024MB
3072MB(Kit of 3)
4096MB(Kit of 2)
4096MB(Kit of 2)
6144MB(Kit of 3)
SS
DS
SS
SS
DS
DS
DS
SS
SS
DS
SS
SS
DS
DS
DS
SAMSUNG
SAMSUNG
Asint
ELPIDA
Asint
ELPIDA
N/A
N/A
N/A
N/A
PATRIOT
N/A
N/A
N/A
N/A
K4B1G0846D
K4B1G0846D
DDRIII1208-DJ
J1108BASE-DJ-E
DDRIII1208-DJ
J1108BASE-DJ-E
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
9(1333-9-9-9-24)
9(1333-9-9-9-24)
(9-9-9-24)
1066-8-8-8-20
(9-9-9-24)
1066-8-8-8-20
(1333-9-9-9-24)
(1066-7-7-7-20)
7-7-7-20(1066-8-7-7-20)
(1066-7-7-7-20)
7(1337-7-7-7-20)
9-9-9-24(1066-7-7-7-20)
9-9-9-24(1066-7-7-7-20)
7-7-7-20(1066-7-7-7-20)
9-9-9-24(1066-7-7-7-20)
SP001GBLTU133S02
1024MB
SS S-POWER I0YT3E0
SP002GBLTU133S02
2048MB
DS S-POWER I0YT3E0
ASUS P7P55D LE
DIMM socket
support
Voltage (Optional)
A*
B*
C*
•
•
•
1.8
•
•
•
•
•
•
•
•
•
1.65
•
•
1.65
•
•
•
1.5-1.6 •
•
•
1.5-1.6 •
•
•
1.5
•
•
•
1.5
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1.8
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1.7
1.65
1.5
1.7
1.65
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
9(1333-9-9-9-24)
•
•
•
9(1333-9-9-9-24)
•
•
•
1.5
1.5
1.5
1.65
1.65
1.8
1.65
1.65
1.6
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1-11
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1600MHz
capability for CPU at 2.66GHz
Timing
Dimm(Bios)
Voltage
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
DIMM socket
support
(Optional)
A*
B*
C*
8-8-8-24(1333-9-9-9-24) 1.65-1.85 •
•
•
7-7-7-20(1333-9-9-9-24) 1.75-1.85 •
•
•
8-8-8-24(1601-8-8-8-24) 1.65
•
•
8-8-8-24(1600-8-8-8-24) 1.65
•
•
9-9-9-24(1601-9-9-9-24) 1.65
•
•
Heat-Sink Package
(1333-9-9--9-24)
1.80
•
•
•
8-8-8-24(1601-8-8-8-24)
8-8-8-24(1600-8-8-8-24)
9-9-9-24(1333-9-9-9-24)
(1601-8-8-8-24)
(1333-9-9-9-24)
8-8-8-21(1333-8-8-8-21)
8-8-8-21(1066-8-8-8-20)
9-9-9-24(1601-9-9-9-24)
8-8-8-28(1600-8-8-8-28)
9(1600-9-8-9-28)
1.65
1.65
1.65
1.8
1.6
1.6-1.65
1.6~1.65
1.5-1.6
1.6
1.5
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
9(1600-9-8-9-28)
1.5
•
•
•
1600-8-8-8-20
9(1333-9-9-9-24)
(1066-8-8-8-20)
7-6-6-24(1333-7-7-7-20)
8-8-8(1066-7-7-7-20)
7-7-7(1066-7-7-7-20)
7-7-7(1333-7-7-7-20)
7-7-6(1333-7-7-7-20)
8-8-8(1066-7-7-7-16)
8-8-8(1066-7-7-7-16)
7-7-7-14(1066-7-7-7-20)
7-7-7-20
9-9-9-24(1333-9-9-9-24)
9-9-9-24(1066-7-7-7-20)
9-9-9-24(1066-7-7-7-20)
7-7-7-20(1066-7-7-7-20)
7-7-7-20(1066-7-7-7-20)
9-9-9-24(1066-7-7-7-20)
9-9-9-24(1600-7-7-7-20)
1066-8-8-8-20
1.65
1.9
1.65
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Vendor
Part No.
Size
SS/ Chip
DS Brand
Chip NO.
A-DATA
A-DATA
CORSAIR
CORSAIR
CORSAIR
AD31600E001GMU
AD31600F002GMU(XMP)
TR3X3G1600C8D(XMP)Ver2.1
TR3X3G1600C8D
TR3X3G1600C9(XMP)Ver1.1
BoxP/N:
TW3X4G1600C9DHXNV
(CM3X2G1600C9DHXNV)Ver4
.1
TR3X6G1600C8D(XMP)Ver2.1
TR3X6G1600C8D
TR3X6G1600C9(XMP)Ver2.1
BL12864BA1608.8SFB(XMP)
F3-12800CL9D-2GBNQ
F3-12800CL8T-6GBHK(XMP)
F3-12800CL8T-6GBPI(XMP)
F3-12800CL9T-6GBNQ
GV34GB1600C8DC
FLGD45F-B8KG9-NAES
3072MB(Kit of 3)
6144MB(Kit of 3)
3072MB(Kit of 3)
3072MB(Kit of 3)
3072MB(Kit of 3)
SS
DS
SS
SS
SS
N/A
N/A
N/A
N/A
N/A
4096MB(Kit of 2) DS N/A
CORSAIR
CORSAIR
CORSAIR
CORSAIR
Crucial
G.SKILL
G.SKILL
G.SKILL
G.SKILL
GEIL
KINGMAX
6144MB(Kit of 3)
6144MB(Kit of 3)
6144MB(Kit of 3)
1024MB
2048MB(Kit of 2)
6144MB(Kit of 3)
6144MB(Kit of 3)
6144MB(Kit of 3)
4096MB(Kit of 2)
1024MB
DS
DS
DS
SS
SS
DS
DS
DS
DS
SS
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
KINGMAX
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
KFB8FNGXF-ANX12A
KINGMAX FLGE85F-B8KG9-NEES
2048MB
DS KINGMAX KFB8FNGXF-ANX12A
KINGSTON KHX12800D3LLK3/3GX(XMP) 3072MB(Kit of 3) SS N/A
Heat-Sink Package
KINGSTON KHX12800D3K2/4G
4096MB(Kit of 2) DS N/A
Heat-Sink Package
KINGSTON KHX12800D3LLK3/6GX(XMP) 6144MB(Kit of 3) DS N/A
Heat-Sink Package
OCZ
OCZ3P1600EB1G
1024MB
SS N/A
Heat-Sink Package
OCZ
OCZ3G1600LV3GK
3072MB(Kit of 3) SS N/A
Heat-Sink Package
OCZ
OCZ3P1600LV3GK
3072MB(Kit of 3) SS N/A
Heat-Sink Package
OCZ
OCZ3P16004GK
4096MB(Kit of 2) DS N/A
Heat-Sink Package
OCZ
OCZ3P1600EB4GK
4096MB(Kit of 2) DS N/A
Heat-Sink Package
OCZ
OCZ3G1600LV6GK
6144MB(Kit of 3) DS N/A
Heat-Sink Package
OCZ
OCZ3X1600LV6GK(XMP)
6144MB(Kit of 3) DS N/A
Heat-Sink Package
Cell Shock CS322271
2048MB(Kit of 2) DS N/A
Heat-Sink Package
Mushkin
996657
4096MB(Kit of 2) DS N/A
Heat-Sink Package
Mushkin
998659(XMP)
6144MB(Kit of 3) DS N/A
Heat-Sink Package
Patriot
PVT33G1600ELK
3072MB(Kit of 3) SS N/A
Heat-Sink Package
Patriot
PVS34G1600ELK
4096MB(Kit of 2) DS N/A
Heat-Sink Package
Patriot
PVS34G1600LLK(XMP)
4096MB(Kit of 2) DS N/A
Heat-Sink Package
Patriot
PVS34G1600LLKN
4096MB(Kit of 2) DS N/A
Heat-Sink Package
Patriot
PVT36G1600ELK
6144MB(Kit of 3) DS N/A
Heat-Sink Package
Patriot
PVT36G1600ELK
6144MB(Kit of 3) DS N/A
Heat-Sink Package
PQI
MFADR401PA0102(XMP)
2048MB
DS SAMSUNG K4B1G08460
1.65
1.65
1.9
1.8
1.65
1.65
1.7-1.9
1.5-1.6
1.65
1.8
1.9
2.0
1.65
1.65
•
•
•
•
•
•
•
•
•
•
•
•
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1625MHz
capability for CPU at 2.66GHz
1-12
Vendor
Part No.
Size
SS/DS Chip
Brand
KINGSTON
KINGSTON
KINGSTON
KHX13000D3LLK2/2GN(EPP)
KHX13000D3LLK2/2GX(XMP)
KHX13000D3LLK2/2GXN
2048MB(Kit of 2)
2048MB(Kit of 2)
2048MB(Kit of 2)
SS
SS
SS
N/A
N/A
N/A
DIMM socket support
Timing
(Optional)
Dimm(Bios) Voltage
A*
B*
C*
Heat-Sink Package
1.9
•
•
•
Heat-Sink Package
1.9
•
•
•
Heat-Sink Package
1.9
•
•
Chip NO.
Chapter 1: Product introduction
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1625MHz
capability for CPU at 2.8 and 2.93GHz
Vendor
Part No.
Size
SS/DS Chip
Brand
KINGSTON
KINGSTON
KINGSTON
KHX13000D3LLK2/2GN(EPP)
KHX13000D3LLK2/2GX(XMP)
KHX13000D3LLK2/2GXN
2048MB(Kit of 2)
2048MB(Kit of 2)
2048MB(Kit of 2)
SS
SS
SS
N/A
N/A
N/A
DIMM socket
support
Timing
Lable(Bios) Voltage (Optional)
A*
B*
Heat-Sink Package
1.9
•
•
Heat-Sink Package
1.9
•
•
Heat-Sink Package
1.9
•
•
Chip NO.
C*
•
•
•
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1800MHz
capability for CPU at 2.66GHz
N/A
Heat-Sink Package
DIMM socket
support
Voltage (Optional)
A* B*
C*
8-8-8-24(1800-8-8-8-24) 1.8
•
•
4GB(Kit of 2) DS N/A
Heat-Sink Package
8-8-8-24
1GB
2GB(Kit of 2)
3GB(Kit of 3)
2GB(Kit of 2)
4GB(Kit of 2)
2GB(Kit of 2)
2GB(Kit of 2)
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
SS/ Chip
DS Brand
Vendor
Part No.
Size
Apacer
78.0AGCD-CDZ(XMP)
BoxP/N:TW3X4G1800C8DF
(CM3X2G1800C8D)Ver4.1
KHX14400D3/1G
KHX14400D3K2/2GN(EPP)
KHX14400D3K3/3GX(XMP)
OCZ3P18002GK
OCZ3P18004GK
TX1800KLU-2GK(XMP)
PVS32G1800LLKN(EPP)
2GB(Kit of 2) SS
CORSAIR
KINGSTON
KINGSTON
KINGSTON
OCZ
OCZ
Transcend
Patriot
SS
SS
SS
SS
DS
SS
SS
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Chip NO.
Timing
Dimm(Bios)
1.80
•
•
1.9
1.9
1.65
•
•
•
•
•
•
•
•
•
•
1800-9-9-9-27
8
8
1.9
8
8-8-8-20(1066-7-7-7-20) 1.9
•
•
•
•
•
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1800MHz
capability for CPU at 2.8 and 2.93GHz
Apacer
2048MB(Kit of 2) SS
N/A
DIMM socket
support
Voltage (Optional)
A* B* C*
Heat-Sink Package 8-8-8-24(1800-8-8-8-24) 1.8
•
•
CORSAIR
4096MB(Kit of 2) DS
N/A
Heat-Sink Package 8-8-8-24
1.80
•
•
1024MB
2048MB(Kit of 2)
3072MB(Kit of 3)
2048MB(Kit of 2)
4096MB(Kit of 2)
2048MB(Kit of 2)
2048MB(Kit of 2)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
1.9
1.9
1.65
•
•
•
•
•
•
•
•
•
•
•
•
•
Vendor
Part No.
78.0AGCD-CDZ(XMP)
BoxP/N:TW3X4G1800C8DF
(CM3X2G1800C8D)Ver4.1
KINGSTON KHX14400D3/1G
KINGSTON KHX14400D3K2/2GN(EPP)
KINGSTON KHX14400D3K3/3GX(XMP)
OCZ
OCZ3P18002GK
OCZ
OCZ3P18004GK
Transcend TX1800KLU-2GK(XMP)
Patriot
PVS32G1800LLKN(EPP)
ASUS P7P55D LE
Size
SS/ Chip Chip NO.
DS Brand
SS
SS
SS
SS
DS
SS
SS
Timing
Dimm(Bios)
1800-9-9-9-27
8
8
1.9
8
8-8-8-20(1066-7-7-7-20) 1.9
•
1-13
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1866MHz
capability for CPU at 2.66GHz
Vendor
Part No.
Size
SS/ Chip Chip NO.
DS Brand
Timing
Dimm(Bios)
Apacer
Crucial
G.SKILL
G.SKILL
KINGSTON
KINGSTON
KINGSTON
KINGSTON
OCZ
OCZ
OCZ
Gingle
78.0AGCQ.CBZ(XMP)
BL12864BE2009.8SFB3(EPP)
F3-16000CL7T-6GBPS(XMP)
F3-16000CL9T-6GBPS(XMP)
KHX16000D3K2/2GN(EPP)
KHX16000D3K3/3GX(XMP)
KHX16000D3ULT1K3/6GX(XMP)
KHX16000D3T1K3/6GX(XMP)
OCZ3FXT20002GK
OCZ3P20002GK(EPP)
OCZ3P2000EB2GK
9CAASS37AZZ01D1
3GB(Kit of 3)
1GB
6GB(Kit of 3)
6GB(Kit of 3)
2GB(Kit of 2)
3GB(Kit of 3)
6GB(Kit 0f 3)
6GB(Kit of 3)
2GB(Kit of 2)
2GB(Kit of 2)
2GB(Kit of 2)
2BG
SS
SS
DS
DS
SS
SS
DS
DS
SS
SS
SS
DS
9-9-9-27(1066-8-8-8-20)
9-9-9-28(1333-9-9-9-24)
7-8-7-20(1066-8-8-8-20)
9-9-9-24(1066-8-8-8-20)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Voltage
2
1.65
1.65
2.0
1.65
1.65
1.65
1.9
1.9
1.8
9(1333-9-9-9-24)
8(1066-8-8-8-20)
9(1066-8-8-8-20)
8
9
9-8-8(1066-8-7-7-20)
9-9-9-24
DIMM socket
support
(Optional)
A*
B*
C*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-1866MHz
capability for CPU at 2.8 and 2.93GHz
Vendor
Part No.
SS/
DS
Size
Chip
Brand
Chip NO.
Timing
Dimm(Bios)
DIMM socket
support
(Optional)
Voltage
A*
CORSAIR
CORSAIR
KINGSTON
OCZ
OCZ
Super Talent
Patriot
Patriot
TR3X3G1866C9D(XMP)
TR3X6G1866C9D
KHX14900D3K3/3GX(XMP)
OCZ3RPR1866C9LV3GK
OCZ3RPR1866C9LV6GK
W1866UX2GB(XMP)
PVS32G1866LLK(XMP)
PVS32G1866LLK(XMP)
3GB(Kit of 3)
6GB(Kit of 3)
3GB
3GB(Kit of 3)
6GB(Kit of 3)
2GB(Kit of 2)
2GB(Kit of 2)
2GB(Kit of 2)
SS
DS
SS
SS
DS
SS
SS
SS
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
9-9-9-24(1866-9-9-9-24)
9-9-9-24(1866-9-9-9-24)
9(1333-9-9-9-24)
9-9-9(1066-7-7-7-20)
9-9-9(1066-7-7-7-20)
8-8-8-24(1333-9-9-9-24)
8-8-8-24(1066-7-7-7-20)
8-8-8-24(1866-8-8-8-24)
1.65
1.65
1.65
1.65
1.65
1.9
1.9
•
•
•
•
•
•
•
B*
•
•
•
•
•
•
•
C*
•
•
•
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-2000MHz
capability for CPU at 2.66GHz
1-14
Vendor
Part No.
Size
SS/ Chip Chip NO.
DS Brand
Timing
Dimm(Bios)
Apacer
Crucial
G.SKILL
G.SKILL
KINGSTON
KINGSTON
KINGSTON
KINGSTON
OCZ
OCZ
OCZ
Gingle
78.0AGCQ.CBZ(XMP)
BL12864BE2009.8SFB3(EPP)
F3-16000CL7T-6GBPS(XMP)
F3-16000CL9T-6GBPS(XMP)
KHX16000D3K2/2GN(EPP)
KHX16000D3K3/3GX(XMP)
KHX16000D3ULT1K3/6GX(XMP)
KHX16000D3T1K3/6GX(XMP)
OCZ3FXT20002GK
OCZ3P20002GK(EPP)
OCZ3P2000EB2GK
9CAASS37AZZ01D1
3GB(Kit of 3)
1GB
6GB(Kit of 3)
6GB(Kit of 3)
2GB(Kit of 2)
3GB(Kit of 3)
6GB(Kit 0f 3)
6GB(Kit of 3)
2GB(Kit of 2)
2GB(Kit of 2)
2GB(Kit of 2)
2GB
SS
SS
DS
DS
SS
SS
DS
DS
SS
SS
SS
DS
9-9-9-27(1066-8-8-8-20)
9-9-9-28(1333-9-9-9-24)
7-8-7-20(1066-8-8-8-20)
9-9-9-24(1066-8-8-8-20)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
9(1333-9-9-9-24)
8(1066-8-8-8-20)
9(1066-8-8-8-20)
8
9
9-8-8(1066-8-7-7-20)
9-9-9-24
DIMM socket
Voltage support (Optional)
A*
B*
C*
•
2
•
•
•
1.65
•
•
1.65
•
•
2.0
•
•
1.65
•
•
•
1.65
•
•
•
1.65
•
•
•
1.9
•
•
1.9
•
•
1.8
•
•
•
•
•
Chapter 1: Product introduction
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-2000MHz
capability for CPU at 2.8 and 2.93GHz
Vendor
Part No.
Size
SS/
DS
Chip Chip NO.
Brand
Timing
Dimm(Bios)
Apacer
Crucial
G.SKILL
G.SKILL
KINGSTON
KINGSTON
KINGSTON
KINGSTON
OCZ
OCZ
OCZ
Gingle
Patriot
78.0AGCQ.CBZ(XMP)
BL12864BE2009.8SFB3(EPP)
F3-16000CL7T-6GBPS(XMP)
F3-16000CL9T-6GBPS(XMP)
KHX16000D3K2/2GN(EPP)
KHX16000D3K3/3GX(XMP)
KHX16000D3ULT1K3/6GX(XMP)
KHX16000D3T1K3/6GX(XMP)
OCZ3FXT20002GK
OCZ3P20002GK(EPP)
OCZ3P2000EB2GK
9CAASS37AZZ01D1
PVS32G2000LLKN
3GB(Kit of 3)
1GB
6GB(Kit of 3)
6GB(Kit of 3)
2GB(Kit of 2)
3GB(Kit of 3)
6GB(Kit 0f 3)
6GB(Kit of 3)
2GB(Kit of 2)
2GB(Kit of 2)
2GB(Kit of 2)
2GB
2GB(Kit of 2)
SS
SS
DS
DS
SS
SS
DS
DS
SS
SS
SS
DS
SS
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
9-9-9-27(1066-8-8-8-20)
9-9-9-28(1333-9-9-9-24)
7-8-7-20(1066-8-8-8-20)
9-9-9-24(1066-8-8-8-20)
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
9(1333-9-9-9-24)
8(1066-8-8-8-20)
9(1066-8-8-8-20)
8
9
9-8-8(1066-8-7-7-20)
9-9-9-24
9-9-9-24(1066-7-7-7-20)
DIMM socket
support
Voltage (Optional)
A* B* C*
•
•
2
•
•
•
1.65
•
•
1.65
•
•
2.0
•
•
•
1.65
•
•
•
1.65
•
•
•
1.65
•
•
•
1.9
•
•
1.9
•
•
1.8
•
•
•
•
•
•
2
•
•
P7P55D LE Motherboard Qualified Vendors Lists (QVL) DDR3-2133MHz
capability for CPU at 2.8 and 2.93GHz
SS/
DS
Vendor Part No.
Size
G.SKILL F3-17066CL9T-6GB-T
6GB(Kit of 3) DS
Chip
Brand
Chip NO.
Timing
Dimm(Bios)
N/A
Heat-Sink Package 9-9-9-24(1066-8-7-7-20) 1.65
Voltage
DIMM socket support
(Optional)
A*
B*
C*
•
•
Side(s): SS - Single-sided DS - Double-sided
DIMM support:
• A*: Supports one (1) module inserted into slot A1 or B1 as Single-channel memory
configuration.
• B*: Supports two (2) modules inserted into the blue slots (A1 and B1) as one pair of
Dual-channel memory configuration.
• C*: Supports four (4) modules inserted into both the blue and the black slots as two
pairs of Dual-channel memory configuration.
•
ASUS exclusively provides hyper DIMM support function.
•
Hyper DIMM support is subject to the physical characteristics of individual CPUs.
•
According to Intel spec definition, DDR3-1600 is supported for one DIMM per channel
only. ASUS exclusively provides two DDR3-1600 DIMM support for each memory
channel.
•
According to Intel CPU spec, CPUs with a core frequency of 2.66G support the
maximum DIMM frequency of up to DDR3-1333. To use DIMMs of a higher frequency
with a 2.66G CPU, enable the DRAM O.C. Profile feature in BIOS. Refer to section 2.4
Ai Overclock Tuner for details.
•
Visit the ASUS website for the latest QVL.
ASUS P7P55D LE
1-15
1.5
Expansion slot
In the future, you may need to install expansion cards. The following sub‑sections describe
the slot and the expansion cards that it supports.
Unplug the power cord before adding or removing expansion cards. Failure to do so may
cause you physical injury and damage motherboard components.
1.5.1
Installing an expansion card
To install an expansion card:
1.
Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.
2.
Remove the system unit cover (if your motherboard is already installed in a chassis).
3.
Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.
4.
Align the card connector with the slot and press firmly until the card is completely
seated on the slot.
5.
Secure the card to the chassis with the screw you removed earlier.
6.
Replace the system cover.
1.5.2
Configuring an expansion card
After installing the expansion card, configure it by adjusting the software settings.
1.
Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for
information on BIOS setup.
2.
Assign an IRQ to the card.
3.
Install the software drivers for the expansion card.
1.5.3
PCI slots
1.5.4
PCI Express x1 slots
1.5.5
PCI Express 2.0 x16 slots
The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specifications.
This motherboard supports PCI Express x1 network cards, SCSI cards and other cards that
comply with the PCI Express specifications.
This motherboard has two PCI Express 2.0 x16 slots that support PCI Express x16 2.0
graphic cards complying with the PCI Express specifications.
Refer to section 1.2 Motherboard overview for the location of the expansion slot.
1-16
•
In single VGA card mode, use the PCIe 2.0 x16_1 slot (blue) for a PCI Express x16
graphics card to get better performance.
•
We recommend that you provide sufficient power when running CrossFireX™ mode.
•
Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when using
multiple graphics cards for better thermal environment.
Chapter 1: Product introduction
1.6
Jumpers
Clear RTC RAM (3-pin CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5-10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter
data.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!
•
If the steps above do not help, remove the onboard battery and move the jumper again
to clear the CMOS RTC RAM data. After the CMOS clearance, reinstall the battery.
•
You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the C.P.R. (CPU Parameter Recall) feature.
Shut down and reboot the system so the BIOS can automatically reset parameter
settings to default values.
•
Due to the chipset behavior, AC power off is required to enable C.P.R. function. You
must turn off and on the power supply or unplug and plug the power cord before
rebooting the system.
ASUS P7P55D LE
1-17
1.7
MemOK! switch
Onboard switch allows you to fine-tune performance when working on a bare or open-case
system. This is ideal for overclockers and gamers who continually change settings to enhance
system performance.
MemOK! switch
Installing DIMMs that are incompatible with the motherboard may cause system boot failure,
and the DRAM_LED near the MemOK! switch lights continuously. Press and hold the
MemOK! switch until the DRAM_LED starts blinking to begin automatic memory compatibility
tuning for successful boot.
1-18
•
The DRAM_LED also lights when the DIMM is not properly installed. Turn off the
system and reinstall the DIMM before using the MemOK! function.
•
Press the MemOK! switch under Windows™ OS environment will reboot the computer
and start memory tuning.
•
During the tuning process, the system loads and tests failsafe memory settings. It
takes about 30 seconds for the system to test one set of failsafe settings. If the test
fails, the system reboots and test the next set of failsafe settings. The blinking speed
of the DRAM_LED increases, indicating different test processes.
•
If the installed DIMMs still fail to boot after the whole tuning process, the DRAM_LED
lights continuously. Replace the DIMMs with ones recommended in the Memory QVL
(Qualified Vendors Lists) in this user manual or on the ASUS website at
www.asus.com.
•
If you turn off the computer and replace DIMMs during the tuning process, the system
continues memory tuning after turning on the computer. To stop memory tuning, turn
off the computer and unplog the power cord for about 5–10 seconds.
•
If your system fail to boot due to BIOS overclocking, press the MemOK! switch to boot
and load BIOS default settings. A messgae will appear during POST reminding you
that the BIOS has been restored to its default settings.
•
We recommend that you download and update to the latest BIOS version from the
ASUS website at www.asus.com after using the MemOK! function.
Chapter 1: Product introduction
1.8
Connectors
1.8.1
Rear panel connectors
1.
PS/2 mouse port (green). This port is for a PS/2 mouse.
2.
LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)
through a network hub. Refer to the table on the next page for the LAN port LED
indicators.
3.
PS/2 Keyboard port (purple). This port is for a PS/2 keyboard.
LAN port LED indications
ACT/LINK SPEED
ACT/LINK LED
LED
SPEED LED
Status
Description
Status
Description
OFF
No link
OFF
10 Mbps connection
ORANGE
Linked
ORANGE
100 Mbps connection
BLINKING
Data activity
GREEN
1 Gbps connection
LED
LAN port
4.
USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to
USB 2.0/1.1 devices.
5.
Optical S/PDIF Out port. This port connects an external audio output device via an
optical S/PDIF cable.
6.
External SATA port. This port connect to an external Serial ATA hard disk drive.
To configure a RAID0 or RAID1, connect external Serial ATA hard disk drives to the
External SATA port .
USB 2.0 ports 3, 4, 5 and 6. These four 4-pin Universal Serial Bus (USB) ports
connect to USB 2.0/1.1 devices.
7.
8.
USB 2.0 ports 7 and 8. These two 4-pin Universal Serial Bus (USB) ports connect to
USB 2.0/1.1 devices.
9.
8-channel audio ports. These ports connects to a multi-speaker audio system.
Audio 2, 4, 6 or 8-channel configuration
Port
Headset
2-channel
4-channel
6-channel
8-channel
Light Blue
Line In
Line In
Line In
Line In
Lime
Line Out
Front Speaker Out
Front Speaker Out
Front Speaker Out
Pink
Mic In
Mic In
Mic In
Mic In
Orange
–
–
Center/Subwoofer
Center/Subwoofer
Black
–
Rear Speaker Out
Rear Speaker Out
Rear Speaker Out
Gray
–
–
–
Side Speaker Out
ASUS P7P55D LE
1-19
1.8.2
1.
Internal connectors
ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)
These connectors are for ATX power supply plugs. The power supply plugs are
designed to fit these connectors in only one orientation. Find the proper orientation and
push down firmly until the connectors completely fit.
• For a fully configured system, we recommend that you use a power supply unit (PSU)
that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum
power of 600 W.
• Do not forget to connect the 8-pin EATX12V power plug. Otherwise, the system will not
boot.
• If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
2.
CPU, chassis, and power fan connectors
(4-pin CPU_FAN, 4-pin CHA_FAN1, 3-pin CHA_FAN2, 3-pin PWR_FAN)
The fan connectors support cooling fans of 350 mA~1000 mA (12 W max.) or a total
of 1 A~4 A (48 W max.) at +12V. Connect the fan cables to the fan connectors on the
motherboard, making sure that the black wire of each cable matches the ground pin of
the connector.
Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the
system may damage the motherboard components. These are not jumpers! Do not place
jumper caps on the fan connectors!
•
•
1-20
Only the CPU_FAN, CHA_FAN 1, and CHA_FAN 2 connectors support the FAN Xpert
feature.
If you install two VGA cards, we recommend that you plug the rear chassis fan cable
to the motherboard connector labeled CHA_FAN1 or CHA_FAN2 for better thermal
environment.
Chapter 1: Product introduction
3.
Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports
either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel
audio I/O module cable to this connector.
• We recommend that you connect a high-definition front panel audio module to this
connector to avail of the motherboard’s high-definition audio capability.
• If you want to connect a high-definition front panel audio module to this connector, set
the Front Panel Type item in the BIOS setup to [HD Audio]. If you want to connect an
AC'97 front panel audio module to this connector, set the item to [AC97]. By default, this
connector is set to [HD Audio].
4.
Serial ATA connectors (7-pin SATA1-6)
These connectors are for the Serial ATA signal cables for Serial ATA hard disk drives
and optical disc drives.
If you installed Serial ATA hard disk drives, you can create a RAID 0, 1, 5, and 10
configuration with the Intel® Matrix Storage Technology through the onboard Intel® P55
chipset.
ASUS P7P55D LE
1-21
5.
•
These connectors are set to Standard IDE mode by default. In Standard IDE mode,
you can connect Serial ATA boot/data hard disk drives to these connectors. If you
intend to create a Serial ATA RAID set using these connectors, set the Configure
SATA as item in the BIOS to [RAID].
•
Before creating a RAID set, refer to section RAID configurations or the RAID manual
bundled in the motherboard support DVD.
•
You must install Windows® XP Service Pack 2 or later version before using Serial ATA
hard disk drives. The Serial ATA RAID feature (RAID 0, 1, 5, and 10) is available only if
you are using Windows® XP SP2 or later version.
•
When using hot-plug and NCQ, set the Configure SATA as item in the BIOS to [AHCI].
See section Storage Configuration for details.
System panel connector (20-8 pin PANEL)
This connector supports several chassis-mounted functions.
•
System power LED (2-pin PLED)
•
This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.
Hard disk drive activity LED (2-pin IDE_LED)
•
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The IDE LED lights up or flashes when data is read from or written to
the HDD.
System warning speaker (4-pin SPEAKER)
•
•
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
ATX power button/soft-off button (2-pin PWRSW)
This connector is for the system power button. Pressing the power button turns the
system on or puts the system in sleep or soft-off mode depending on the BIOS settings.
Pressing the power switch for more than four seconds while the system is ON turns the
system OFF.
Reset button (2-pin RESET)
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
1-22
Chapter 1: Product introduction
6.
USB connectors (10-1 pin USB910; USB1112; USB1314)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up to
480 Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!
You can connect the front panel USB cable to the ASUS Q-Connector (USB, blue) first, and
then install the Q-Connector (USB) to the USB connector onboard if your chassis supports
front panel USB ports.
The USB module is purchased separately.
7.
Serial port connector (10-1 pin COM1)
This connector is for a serial (COM) port. Connect the serial port module cable to this
connector, then install the module to a slot opening at the back of the system chassis.
The COM module is purchased separately.
ASUS P7P55D LE
1-23
8.
Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port(s).
Connect the S/PDIF Out module cable to this connector, then install the module to a
slot opening at the back of the system chassis.
The S/PDIF module is purchased separately.
9.
Optical drive audio connector (4-pin CD)
This connector allows you to receive stereo audio input from sound sources such as a
CD-ROM, TV tuner, or MPEG card.
1-24
Chapter 1: Product introduction
10. JMicron® JMB361 IDE Connector (40-1 pin PRI_IDE [Blue])
The onboard IDE connector is for the Ultra DMA 133/100/66 signal cable. There are
three connectors on each Ultra DMA 133/100/66 signal cable: blue, black, and gray.
Connect the blue connector to the motherboard’s IDE connector, then select one of the
following modes to configure your device.
Drive jumper setting
Mode of
device(s)
Cable connector
Single device
Cable-Select or Master
-
Black
Two devices
Cable-Select
Master
Black
Slave
Gray
Master
Master
Black or gray
Slave
Slave
•
Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA
cable connector. This prevents incorrect insertion when you connect the IDE cable.
•
Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices.
If any device jumper is set as “Cable-Select”, ensure that all other device jumpers have the
same setting.
ASUS P7P55D LE
1-25
1.9
Installing an operating system
This motherboard supports Windows® XP/ 64-bit XP/ Vista™/ 64-bit Vista™/ 7/ 64-bit 7
operating systems (OS). Always install the latest OS version and corresponding updates to
maximize the features of your hardware.
1.10
•
Motherboard settings and hardware options vary. Use the setup procedures presented
in this chapter for reference only. Refer to your OS documentation for detailed
information.
•
Ensure that you install the Windows® XP Service Pack 2 or later versions before
installing the drivers for better compatibility and system stability.
Support DVD information
The support DVD that comes with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.
The contents of the support DVD are subject to change at any time without notice. Visit the
ASUS website at www.asus.com for updates.
1.10.1
Running the support DVD
Place the support DVD into the optical drive. The DVD automatically displays the Drivers
menu if Autorun is enabled in your computer. Click each menu tab and select the items you
want to install.
The Drivers menu shows the available
device drivers if the system detects
installed devices. Install the necessary
drivers to use the devices.
The Utilities
menu shows the
applications and
other software that
the motherboard
supports.
The Make disk menu
contains items to
create the RAID/AHCI
driver disk.
The Manual menu contains
the list of supplementary user
manuals. Click an item to open
the folder of the user manual.
Click the Contact
tab to display the
ASUS contact
information.
Click an icon
to display DVD/
motherboard
information
Click an item
to install
If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to
locate the file ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run
the DVD.
1-26
Chapter 1: Product introduction
Chapter 2 BIOS setup
2.1
Managing and updating your BIOS
Save a copy of the original motherboard BIOS file to a USB flash disk in case you need to
restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update
utility.
2.1.1
ASUS Update
The ASUS Update is a utility that allows you to manage, save, and update the motherboard
BIOS in Windows® environment.
• ASUS Update requires an Internet connection either through a network or an Internet
Service Provider (ISP).
• This utility is available in the support DVD that comes with the motherboard package.
Installing ASUS Update
To install ASUS Update:
1.
Place the support DVD in the optical drive.
2.
From the Main menu, click the Utilities tab, and then click Install ASUS Update
VX.XX.XX.
3.
The ASUS Update utility is copied to your system.
Quit all Windows® applications before you update the BIOS using this utility.
Updating the BIOS
To update the BIOS:
1.
From the Windows® desktop, click Start > Programs > ASUS > ASUSUpdate >
ASUSUpdate to launch the ASUS Update utility.
2.
From the dropdown list, select any of the updating process.
Updating from the Internet
a.
Select Update BIOS from the Internet, and then click Next.
b.
Select the ASUS FTP site nearest you to avoid network traffic, or click Auto elect. Click Next.
c.
From the FTP site, select the BIOS
version that you wish to download, then click Next.
ASUS P7P55D LE
2-1
Updating from a BIOS file
a.
Select Update BIOS from a file, then click Next.
b.
Locate the BIOS file from the Open window, then click Open.
3.
Follow the onscreen instructions to complete the update process.
The ASUS Update utility is capable of updating itself through the Internet.
Always update the utility to avail all its features.
Ensure to load the BIOS default settings to ensure system compatibility and
stability. Select the Load Setup Defaults item under the Exit menu. See section
Exit Menu for details.
2.1.2
ASUS EZ Flash 2
The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS‑based
utility.
Before you start using this utility, download the latest BIOS file from the ASUS website at
www.asus.com.
To update the BIOS using EZ Flash 2:
1.
Insert the USB flash disk that contains the latest BIOS file to the USB port, then launch
EZ Flash 2 in any of these two ways:
•
•
Press <Alt> + <F2> during POST.
Enter the BIOS setup program. Go to the Tools menu to select EZ Flash 2 and
press <Enter> to enable it.
Press <Tab> to switch between drives until the correct BIOS file is found.
ASUSTek EZ Flash 2 BIOS ROM Utility V3.36
FLASH TYPE: WOINBOND W25X80
Current ROM
BOARD: P7P55D LE
VER: 0212 (H:00 B:06)
DATE: 06/11/2009
Update ROM
BOARD: Unknown
VER: Unknown
DATE: Unknown
PATH: A:\
A:
Note
[Enter] Select or Load [Tab] Switch
[Up/Down/Home/End] Move
[B] Backup
2-2
[V] Drive Info
[ESC] Exit
Chapter 2: BIOS information
2.
When the correct BIOS file is found, EZ Flash 2 performs the BIOS update process
and automatically reboots the system when done.
• Only a USB flash disk with FAT 32/16 format and single partition can support the ASUS
EZ Flash 2 utility.
• Do not shut down or reset the system while updating the BIOS to prevent system boot
failure!
2.1.3
ASUS CrashFree BIOS 3 utility
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 support.asus.com 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 starts flashing the corrupted BIOS file.
4.
Turn off the system after the utility completes the updating process and power on
again.
5.
The system requires you to enter BIOS Setup to recover BIOS setting. To ensure
system compatibility and stability, we recommend that you press <F2> to load default
BIOS values.
DO NOT shut down or reset the system while recovering the BIOS! Doing so
can cause system boot failure!
ASUS P7P55D LE
2-3
2.2
BIOS setup program
Use the BIOS Setup program to update the BIOS or configure its parameters. The BIOS
screens include navigation keys and brief online help to guide you in using the BIOS Setup
program.
Entering BIOS Setup at startup
To enter BIOS Setup at startup:
• Press <Delete> during the Power-On Self Test (POST). If you do not press <Delete>,
POST continues with its routines.
Entering BIOS Setup after POST
To enter BIOS Setup after POST:
• Press <Ctrl>+<Alt>+<Del> 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.
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force
reset from a running operating system can cause damage to your data or system. We
recommend to always shut down the system properly from the operating system.
• The default BIOS settings for this motherboard apply for most conditions to ensure
optimum performance. If the system becomes unstable after changing any BIOS
settings, load the default settings to ensure system compatibility and stability. Select the
Load Setups Default item under the Exit Menu. See section 2.9 Exit menu.
• The BIOS setup screens shown in this section are for reference purposes only, and may
not exactly match what you see on your screen.
• Visit the ASUS website at www.asus.com to download the latest BIOS file for this
motherboard.
2.3
Main menu
When you enter the BIOS Setup program, the Main menu screen appears, giving
you an overview of the basic system information. You can also set the system time
and date and BIOS language in this menu.
Refer to BIOS menu screen for information on the menu screen items and how
to navigate through them.
Main
Ai Tweaker
BIOS SETUP UTILITY
Advanced
Power
Boot
System Time
System Date
Language
SATA1
SATA2
SATA3
SATA4
SATA5
SATA6
Storage Configuration
System Information
2-4
Tools
Exit
[13:51:25]
[Thu 07/09/2009]
[English]
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a field.
[HDT722516DLA380]
[Not Detected]
[ATAPI DVD DH1]
[Not Detected]
[Not Detected]
[Not Detected]
Use [+] or [-] to
configure system Date.
Chapter 2: BIOS information
2.3.1
SATA 1-6
While entering Setup, the BIOS automatically detects the presence of IDE/SATA
devices. There is a separate submenu for each IDE/SATA device. Select a device
item then press <Enter> to display the SATA device information.
BIOS SETUP UTILITY
Main
SATA 1
Device
: Hard Disk
Vendor
: HDT722516DLA380
Size
: 164.7GB
LBA Mode
: Supported
Block Mode
: 16Sectors
PIO Mode
: 4
Async DMA
: MultiWord DMA-2
Ultra DMA
: Ultra DMA-5
SMART Monitoring:Supported
Type
[Auto]
LBA/Large Mode
[Auto]
Block(Multi-Sector Transfer)M [Auto]
PIO Mode
[Auto]
DMA Mode
[Auto]
SMART Monitoring
[Auto]
32Bit Data Transfer
[Enabled]
Select the type
of device connected
to the system.
←→
↑↓
+F1
F10
ESC
Select Screen
Select Item
Change Field
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
The BIOS automatically detects the values opposite the dimmed items (Device,
Vendor, Size, LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and
SMART monitoring). These values are not user-configurable. These items show
N/A if no IDE device is installed in the system.
Type [Auto]
Allows you to select the type of SATA drive installed.
[Not Installed]
[Auto]
[CDROM]
[ARMD]
Select this option if no SATA drive is installed.
Allows automatic selection of the appropriate SATA device type.
Select this option if you are specifically configuring a CD-ROM drive.
Select [ARMD] (ATAPI Removable Media Device) if your device is either a
ZIP, LS-120, or MO drive.
LBA/Large Mode [Auto]
Enables or disables the LBA (Logical Block Addressing) mode.
[Auto]
[Disabled]
Select [Auto] to enable the LBA mode (Logical Block Addressing mode)
if the device supports this mode, and if the device was not previously
formatted with LBA mode disabled.
Disables this function.
Block (Multi-Sector Transfer) M [Auto]
Enables or disables data multi-sectors transfers.
[Auto]
[Disabled]
ASUS P7P55D LE
When set to [Auto], the data transfer from and to the device occurs in
multiple sectors at a time if the device supports multi-sector transfer
feature.
When set to [Disabled], the data transfer from and to the device occurs one
sector at a time.
2-5
PIO Mode [Auto]
[Auto]Allows automatic selection of the PIO (Programmed input/output) modes,
which correspond to different data transfer rates.
[0] [1] [2] [3] [4]Set the PIO mode to Mode 0, 1, 2, 3, or 4.
DMA Mode [Auto]
DMA (Direct Memory Access) allows your computer to transfer data to and from
the hardware devices installed with much less CPU overhead.
The DMA mode consists of SDMA (single-word DMA), MDMA (multi-word DMA),
and UDMA (Ultra DMA). Setting to [Auto] allows automatic selection of the DMA
mode.
SMART Monitoring [Auto]
[Auto]Allows automatic selection of the S.M.A.R.T (Smart Monitoring, Analysis,
and Reporting Technology).
[Enabled]Enables the S.M.A.R.T feature.
[Disabled]Disables the S.M.A.R.T feature.
32Bit Data Transfer [Enabled]
[Enabled]Sets the IDE controller to combine two 16-bit reads from the hard disk
into a single 32-bit double word transfer to the processor. This makes
more efficient use of the PCI bus as fewer transactions are needed for the
transfer of a particular amount of data.
[Disabled]Disables this function.
2.3.2
Storage Configuration
The Storage Configuration menu allows you to configure your storage devices.
Select an item then press <Enter> to display the submenu.
Main
BIOS SETUP UTILITY
Storage Configuration
2-6
SATA Configuraton
Configure SATA as
[Enhanced]
[IDE]
Hard Disk Write Protect
IDE Detect Time Out (Sec)
[Disabled]
[35]
Set [Compatible Mode]
when Legacy OS (i.e.
WIN ME, 98, NT4.0, MS
DOS) is used.
Set [Enhanced Mode]
when Native OS (i.e.
WIN2000, Win XP, Vista
is used.
Chapter 2: BIOS information
SATA Configuration [Enhanced]
Configuration options: [Disabled] [Compatible] [Enhanced]
Configure SATA as [IDE]
Sets the configuration for the Serial ATA connectors supported by the
Southbridge chip. Configuration options: [IDE] [RAID] [AHCI]
•
If you want to use the Serial ATA hard disk drives as Parallel ATA physical
storage devices, keep the default setting [IDE].
•
If you want the Serial ATA hard disk drives to use the Advanced Host
Controller Interface (AHCI), set this item to [AHCI]. The AHCI allows
the onboard storage driver to enable advanced Serial ATA features that
increases storage performance on random workloads by allowing the drive
to internally optimize the order of commands.
•
If you want to create a RAID 0, RAID 1, RAID 5, RAID 10, or the Intel®
Matrix Storage Technology configuration from the Serial ATA hard disk
drives, set this item to [RAID].
Hard Disk Write Protect [Disabled]
Disables or enables device write protection. This will be effective only if the device
is accessed through BIOS. Configuration option: [Disabled] [Enabled]
IDE Detect Time Out (Sec) [35]
Selects the time out value for detecting ATA/ATAPI devices. Configuration options:
[0] [5] [10] [15] [20] [25] [30] [35]
2.3.3
AHCI Configuration
This menu is the section for AHCI configuration. It appears only when you set the
item Configure SATA as from the sub-menu of SATA Configuration to [AHCI].
BIOS SETUP UTILITY
Main
AHCI Settings
SATA
SATA
SATA
SATA
SATA
SATA
Port1
Port2
Port3
Port4
Port5
Port6
ASUS P7P55D LE
[Not
[Not
[Not
[Not
[Not
[Not
Detected]
Detected]
Detected]
Detected]
Detected]
Detected]
Some SATA CD/DVD in
AHCI mode need to wait
ready longer.
2-7
SATA Port1–6 [XXXX]
Displays the status of auto-detection of SATA devices.
BIOS SETUP UTILITY
Main
Select the type of
devices connected to
the system.
SATA Port1
Device
:Not Detected
SATA Port1
SMART Monitoring
[Auto]
[Enabled]
SATA Port1 [Auto]
Allows you to select the type of device connected to the system.
Configuration options: [Auto] [Not Installed]
SMART Monitoring [Enabled]
Allows you to set the Self-Monitoring, Analysis and Reporting Technology.
Configration options: [Disabled] [Enabled]
2.3.4
System Information
This menu gives you an overview of the general system specifications. The
BIOS automatically detects the BIOS information, CPU specification, and system
memory in this menu.
Main
BIOS SETUP UTILITY
BIOS Information
BIOS Version
: 0120
BIOS Build Date : 07/30/09
Processor
Type
: Intel (R) Core(TM) CPU 860 @ 2.80GHz
Speed
: 2808MHz
System Memory
Usable Size
: 4024MB
2-8
Chapter 2: BIOS information
2.4
Ai Tweaker menu
The Ai Tweaker menu items allow you to configure overclocking-related items.
Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect
field values can cause the system to malfunction.
The configuration options for this chapter vary depending on the CPU and
DIMM model you installed on the motherboard.
Main
Ai Tweaker
BIOS SETUP UTILITY
Advanced
Power
Boot
Configure System Performance Settings
Ai Overclock Tuner
CPU Ratio Setting
Intel(R) SpeedStep(TM) Tech
Intel(R) TurboMode Tech
Xtreme Phase Full Power Mode
DRAM Frequency
QPI Frenquency
[Auto]
[Auto]
[Enabled]
[Enabled]
[Auto]
[Auto]
[Auto]
Tools
Exit
Press ENTER to run the
utility to Tuner BCLK.
DRAM Timing Control
CPU Differential Amplitude
[Auto]
CPU Clock Skew
[Auto]
******* Please key in numbers directly! *******
CPU Voltage Mode
[Offset]
Offset Voltage
[Auto]
IMC Voltage
[Auto]
DRAM Voltage
[16V]
CPU PLL Voltage
[Auto]
←→
↑↓
Enter
F1
F10
ESC
Select Screen
Select Item
Go to Sub Screen
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
Scroll down to display the following items:
PCH Voltage
[Auto]
DRAM DATA REF Voltage on CHA [Auto]
DRAM DATA REF Voltage on CHB [Auto]
***********************************************
Load-Line Calibration
[Auto]
CPU Spread Spectrum
[Auto]
PCIE Spread Spectrum
[Auto]
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
ASUS P7P55D LE
2-9
2.4.1
Ai Overclock Tuner [Auto]
Allows selection of CPU overclocking options to achieve desired CPU internal
frequency. Select either one of the preset overclocking configuration options:
Manual
Allows you to individually set overclocking parameters.
Auto
Loads the optimal settings for the system.
D.O.C.P
Overclocks DRAM frequency by adjusting BCLK frequency.
X.M.P.
If you install memory module(s) supporting the eXtreme
Memory Profile (X.M.P.) Technology, choose this item to set the
profile(s) supported by your memory module(s) for optimizing
the system performance.
The configuration options for the following sub-item vary depending on the
DIMMs you install on the motherboard.
DRAM O.C. Profile [DDR3-1600MHz]
This item appears only when you set the Ai Overclock Tuner item to
[D.O.C.P.] and allows you to select a DRAM O.C. profile, which applies
different settings to DRAM frequency, DRAM timing and DRAM voltage.
Configuration options: [DDR3-1600MHz] [DDR3-1800MHz] [DDR3-1866MHz]
[DDR3-2000MHz] [DDR3-2133MHz]
eXtreme Memory Profile [Disabled]
This item appears only when you set the Ai Overclock Tuner item to [X.M.P.]
To obtain the best performance of the X.M.P. DIMM or 1600MHz DIMM, install
only one DIMM on each memory channel.
2.4.2
CPU Ratio Setting [Auto]
2.4.3
Intel(R) SpeedStep(TM) Tech [Enabled]
2.4.4
Intel(R) TurboMode Tech [Enabled]
Allows you to adjust the ratio between CPU Core Clock and BCLK Frequency.
Use the <+> and <-> keys to adjust the value. The valid value ranges differently
according to your CPU model.
When set to [Disabled], the CPU runs at its default speed. When set to [Enabled],
the CPU speed is controlled by the operating system. Configuration options:
[Disabled] [Enabled]
This item appears only if you set the Ratio CMOS Setting item to [Auto]. Turbo
mode allows processor cores to run faster than marked frequency in specific
condition. Configuration options: [Disabled] [Enabled]
2-10
Chapter 2: BIOS information
2.4.5
[Auto]
[Enabled]
Xtreme Phase Full Power Mode [Auto]
Automatic configuration.
Enables Full Power Mode to ensure the best CPU overclocking
performance.
The following two items appear only when you set the Ai Overclock Tuner item
to [Manual], [D.O.C.P.] or [X.M.P.].
BCLK Frequency [XXX]
Allows you to adjust the Internal Base Clock (BCLK). Use the <+> and <-> keys to
adjust the value. You can also type the desired value using the numeric keypad.
The values range from 80 to 500.
PCIE Frequency [Auto]
Allows you to set the PCI Express frequency. Use the <+> and <-> keys to adjust
the PCIE frequency.
Xtreme Phase Full Power Mode [Auto]
Configuration options: [Auto] [Disabled]
2.4.6
DRAM Frequency [Auto]
Allows you to set the DDR3 operating frequency.
Configuration options: [Auto] [DDR3-800MHz] [DDR3-1066MHz] [DDR3-1333MHz]
The DRAM Frequency configuration options vary with the BCLK Frequency item
settings.
Selecting a very high DRAM frequency may cause the system to become
unstable! If this happens, revert to the default setting.
2.4.7
QPI Frequency [Auto]
Allows you to set the QPI operating frequency.
Configuration options: [Auto] [4270MHz] [4800MHz]
2.4.8.
DRAM Timing Control [Auto]
The items in this menu allow you to set the DRAM timing control features.
The configuration options for some of the following items vary depending on the
DIMMs you install on the motherboard.
1st Information: 7-7-7-20-4-60-8-5-20
The values vary depending on your settings of the following sub-items:
DRAM CAS# Latency [Auto]
Configuration options: [Auto] [3 DRAM Clock] [4 DRAM Clock] – [10 DRAM
Clock] [11 DRAM Clock]
ASUS P7P55D LE
2-11
DRAM RAS# to CAS# Delay [Auto]
Configuration options: [Auto] [3 DRAM Clock] [4 DRAM Clock] – [9 DRAM
Clock] [15 DRAM Clock]
DRAM RAS# PRE Time [Auto]
Configuration options: [Auto] [3 DRAM Clock] [4 DRAM Clock] – [9 DRAM
Clock] [15 DRAM Clock]
DRAM RAS# ACT Time [Auto]
Configuration options: [Auto] [3 DRAM Clock] [4 DRAM Clock] – [30 DRAM
Clock] [31 DRAM Clock]
DRAM RAS# to RAS# Delay [Auto]
Configuration options: [Auto] [1 DRAM Clock] – [7 DRAM Clock]
DRAM REF Cycle Time [Auto]
Configuration options: [Auto] [30 DRAM Clock] [36 DRAM Clock]
[48 DRAM Clock] [60 DRAM Clock] [72 DRAM Clock] [82 DRAM Clock]
[88 DRAM Clock] [90 DRAM Clock] [100 DRAM Clock] [110 DRAM Clock]
[122 DRAM Clock] [132 DRAM Clock] [140 DRAM Clock] [150 DRAM Clock]
[160 DRAM Clock] [170 DRAM Clock] [180 DRAM Clock]
DRAM WRITE Recovery Time [Auto]
Configuration options: [Auto] [1 DRAM Clock] – [18 DRAM Clock]
DRAM READ to PRE Time [Auto]
Configuration options: [Auto] [1 DRAM Clock] – [15 DRAM Clock]
DRAM FOUR ACT WIN Time [Auto]
Configuration options: [Auto] [1 DRAM Clock] – [63 DRAM Clock]
2nd Information: 3N-255-255
The values vary depending on your settings of the following sub-items:
DRAM Timing Mode [Auto]
Configuration options: [Auto] [1N] [2N] [3N]
DRAM Round Trip Latency on CHA [Auto]
[Auto] [Advance 15 Clock]–[Advance 1 Clock] [Normal] [Delay 1 Clock]
[Delay 15 Clock]
DRAM Round Trip Latency on CHB [Auto]
[Auto] [Advance 15 Clock]–[Advance 1 Clock] [Normal] [Delay 1 Clock]
[Delay 15 Clock]
3rd Information: 8-8-25-17-17-17-9-9-6-9-9-6
The values vary depending on your settings of the following sub-items:
DRAM WRITE to READ Delay(DD) [Auto]
Configuration options: [Auto] [1 DRAM Clock] – [8 DRAM Clock]
DRAM WRITE to READ Delay(DR) [Auto]
Configuration options: [Auto] [1 DRAM Clock] – [8 DRAM Clock]
DRAM WRITE to READ Delay(SR) [Auto]
Configuration options: [Auto] [10 DRAM Clock] – [22 DRAM Clock]
2-12
Chapter 2: BIOS information
DRAM READ to WRITE Delay(DD) [Auto]
Configuration options: [Auto] [2 DRAM Clock] – [14 DRAM Clock]
DRAM READ to WRITE Delay(DR) [Auto]
Configuration options: [Auto] [2 DRAM Clock] – [14 DRAM Clock]
DRAM READ to WRITE Delay(SR) [Auto]
Configuration options: [Auto] [2 DRAM Clock] – [14 DRAM Clock]
DRAM READ to READ Delay(DD) [Auto]
Configuration options: [Auto] [2 DRAM Clock] – [9 DRAM Clock]
DRAM READ to READ Delay(DR) [Auto]
Configuration options: [Auto] [2 DRAM Clock] – [9 DRAM Clock]
DRAM READ to READ Delay(SR) [Auto]
Configuration options: [Auto] [4 DRAM Clock] [6 DRAM Clock]
DRAM WRITE to WRITE Delay(DD) [Auto]
Configuration options: [Auto] [2 DRAM Clock] – [9 DRAM Clock]
DRAM WRITE to WRITE Delay(DR) [Auto]
Configuration options: [Auto] [2 DRAM Clock] – [9 DRAM Clock]
DRAM WRITE to WRITE Delay(SR) [Auto]
Configuration options: [Auto] [4 DRAM Clock] [6 DRAM Clock]
2.4.9
CPU Differential Amplitude [Auto]
2.4.10
CPU Clock Skew [Auto]
Different AMP might enhance BCLK overclocking ability.
Configuration options: [Auto] [700mV] [800mV] [900mV] [1000mV]
Adjusting this item may help enhancing BCLK overclocking ability. You may need
to adjust the NB Clock Skew item at the same time.
Configuration options: [Auto] [Normal] [Delay 100ps]–[Delay 1500ps]
Some of the following items are adjusted by typing the desired values using
the numeric keypad and press the <Enter> key. You can also use the <+> and
<-> keys to adjust the value. To restore the default setting, type [auto] using the
keyboard and press the <Enter> key.
2.4.11
CPU Voltage Mode [Offset]
Allows you to set the CPU Voltage Mode. Different sub-items appear according to
the CPU Voltage Mode item setting. Configuration options: [Offset] [Manual]
Offset Voltage [Auto]
This item appears only when you set the CPU Voltage Mode item to [Offset] and
allows you to set the Offset voltage. The values range from 0.00625V to 0.50000V
with a 0.00625V interval.
Offset Sign [-]
This item appears only when you set the Offset Voltage item to a value other than [Auto].
[+]
To offset the voltage by a positive value.
[–]
To offset the voltage by a negative value.
ASUS P7P55D LE
2-13
Fixed Voltage [Auto]
This item appears only whne you set the CPU Voltage Mode item to [Manual] and
allows you to set a fixed CPU voltage. The values range from 0.85V to 1.70V* with
a 0.00625V interval.
Refer to the CPU documentation before setting the CPU Vcore voltage. Setting
a high VCore voltage may damage the CPU permanently, and setting a low
VCore voltage may make the system unstable.
2.4.12
IMC Voltage [Auto]
Allows you to set the CPU Integrated Memory Controller voltage. The values range
from 1.1V to 1.45V* with a 0.05V interval.
2.4.13
DRAM Voltage [Auto]
Allows you to set the DRAM voltage. The values range from 1.5V to 2.2V* with a
0.1V interval.
According to Intel CPU spec, DIMMs with voltage requirement over 1.65V may
damage the CPU permanently. We recommend you install the DIMMs with the
voltage requirement below 1.65V.
2.4.14
CPU PLL Voltage [Auto]
2.4.15
PCH Voltage [Auto]
Allows you to set the CPU PLL voltage. The values range from 1.8V to 2.1V with a
0.1V interval.
Allows you to set the Platform Controller Hub voltage. The values range from
1.05V to 1.15V with a 0.10V interval.
The system may need better cooling system to work stably under high voltage
settings.
2.4.16
DRAM DATA REF Voltage on CHA/B [Auto]
Allows you to set the DRAM DATA Reference Voltage on Channel A/B/C. The
values range from 0.395x to 0.630x with a 0.005x interval. Different ratio might
enhance DRAM overclocking ability.
2-14
Chapter 2: BIOS information
2.4.17
Load-Line Calibration [Auto]
2.4.18
CPU Spread Spectrum [Auto]
2.4.19
PCIE Spread Spectrum [Auto]
[Auto]
[Disabled]
[Enabled]
[Auto]
[Disabled]
[Enabled]
[Auto]
[Disabled]
[Enabled]
Automatic configuration.
Follow Intel specifications.
Improve CPU VDroop directly.
Automatic configuration.
Enhances the BCLK overclocking ability.
Sets to [Enabled] for EMI control.
ASUS P7P55D LE
Automatic configuration.
Enhances the PCIE overclocking ability.
Sets to [Enabled] for EMI control.
2-15
2.5
Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other
system devices.
Be cautious when changing the settings of the Advanced menu items. Incorrect
field values can cause the system to malfunction.
Main
Ai Tweaker
BIOS SETUP UTILITY
Advanced
Power
Boot
CPU Configuration
North Bridge Configuration
Onboard Devices Configuration
USB Configuration
PCIPnP
Intel VT-d Tools
Exit
Configure CPU.
[Disabled]
Select Screen
←→
Select Item
↑↓
Enter Go to Sub Screen
F1
General Help
F10
Save and Exit
ESC
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.5.1
CPU Configuration
The items in this menu show the CPU-related information that the BIOS
automatically detects.
The items shown in this screen may be different due to the CPU you installed.
BIOS SETUP UTILITY
Advanced
Configure advanced CPU settings
Module Version:01.04
Manufacturer:Intel
Brand String:Intel(R) Core(TM) CPU 860@ 2.80GHz
Frequency
:2.80GHz
BCLK Speed :133MHz
Cache L1
:128 KB
Cache L2
:1024 KB
Cache L3
:8192 KB
Ratio Status:Unlocked (Min:09, Max:16)
Ratio Actual Value:16
CPUID: 20651
CPU Ratio Setting
C1E Support
Hardware Prefetcher
Adjacent Cache Line Prefetch
Max CPUID Value Limit
Intel(R) Virtualization Tech
[Auto]
[Enabled]
[Enabled]
[Enabled]
[Disabled]
[Enabled]
Sets the ratio between
CPU Core Clock and the
BCLK Frequency.
NOTE: If an invalid
ratio is set in CMOS
then actual and
setpoint values may
differ.
NOTE: Please key in
ratio numbers directly
←→
↑↓
F1
F10
ESC
Select Screen
Select Item
General Help
Save and Exit
Exit
Scroll down to display the following items:
CPU TM function
Execute-Disable Bit Capability
Intel(R) HT Technology
Active Processor Cores
A20M
Intel(R) SpeedStep(TM) Tech
Intel(R) Turbo Mode tech
Intel(R) C-STATE Tech
v02.61 (C)Copyright
2-16
[Enabled]
[Enabled]
[Enabled]
[All]
[Disabled]
[Enabled]
[Enabled]
[Disabled]
1985-2009, American Megatrends, Inc.
Chapter 2: BIOS information
CPU Ratio Setting [Auto]
Allows you to adjust the ratio between CPU Core Clock and BCLK Frequency.
Use the <+> and <-> keys to adjust the value. The valid value ranges differently
according to your CPU model.
C1E Support [Enabled]
[Enabled]
[Disabled]
Enables the C1E support function. This item should be enabled in order to
enable the Enhanced Halt Sate.
Disables this function.
Hardware Prefetcher [Enabled]
[Enabled]
[Disabled]
Enables the Hardware Prefetcher function. This item should be enabled
in order to enable the L2 cache (MLC) Streamer Prefetcher for tuning
performance of the specific application.
Disables this function.
Adjacent Cache Line Prefetcher [Enabled]
[Enabled]
[Disabled]
Enables the Adjacent Cache Line Prefetcher function. This item should be
enabled in order to enable the L2 cache (MLC) Spatial Prefetcher for tuning
performance of the specific application.
Disables this function.
Max CPUID Value Limit [Disabled]
[Enabled]
[Disabled]
Allows legacy operating systems to boot even without support for CPUs
with extended CPUID functions.
Disables this function.
Intel(R) Virtualization Tech [Enabled]
[Enabled]
[Disabled]
Allows a hardware platform to run multiple operating systems separately
and simultaneously, enabling one system to virtually function as several
systems.
Disables this function.
CPU TM function [Enabled]
[Enabled]
[Disabled]
Enables the overheated CPU to throttle its clock speed to cool down.
Disables this function.
Execute Disable Bit Capability [Enabled]
[Enabled]
[Disabled]
Enables the No-Execution Page Protection Technology.
Forces the XD feature flag to always return to zero (0).
Intel(R) HT Technology [Enabled]
[Enabled]
[Disabled]
ASUS P7P55D LE
Enables the Intel Hyper-Threading Technology.
Only one thread per activated CPU core is enabled.
2-17
Active Processor Cores [All]
[All]
[1]
[2]
Activate all CPU cores in the processor package.
Activate only 1 CPU core in the processor package.
Activate 2 CPU cores in the processor package.
A20M [Disabled]
[Enabled]
[Disabled]
Legacy OSes and APs may need this function enabled.
Disables this function.
Intel(R) SpeedStep (TM) Tech [Enabled]
[Enabled]
[Disabled]
The CPU speed is controlled by the operating system.
The CPU runs at its default speed.
Intel(R) TurboMode tech [Enabled]
[Enabled]
[Disabled]
Allows processor cores to run faster than marked frequency in specific
condition.
Disables this function.
Intel(R) C-STATE Tech [Disabled]
[Enabled]
[Disabled]
Allows the CPU to save more power under idle mode. Enable this item only
when you install a C-State Technology-supported CPU.
Disables this function.
C State package limit setting [Auto]
This item appears only when you set the Intel(R) C-STATE Tech item to
[Enabled]. We recommend that you set this item to [Auto] for BIOS to
automatically detect the C-State mode supported by your CPU. Configuration
options: [Auto] [C1] [C3] [C6]
2.5.2
North Bridge Configuration
The North Bridge Configuration menu allows you to change the advanced chipset
settings.
Advanced
BIOS SETUP UTILITY
North Bridge Chipset Configuration
IMC Type : Lynnfield
Memory Remap Feature [Enabled]
PCI MMIO Allocation: 4GB To 3072MB
E N A B L E : A l l o w
r e m a p p i n g
o f
overlapped PCI memory
above the total
physical memory.
DISABLE: Do not allow
remapping of memory.
Memory Remap Feature [Enabled]
[Disabled]Do not allow remapping of memory.
[Enabled] Allows for the segment of system memory that was previously
overwritten by PCI devices to be remapped above the total
physical memory.
2-18
Chapter 2: BIOS information
2.5.3
Onboard Devices Configuration
Advanced
BIOS SETUP UTILITY
Onboard Devices Configuration
HDA Controller
Front Panel Type
Realtek LAN
LAN Boot ROM
J-Micron eSATA/PATA Controller
Serial Port1 Address
[Enabled]
[HD Audio]
[Enabled]
[Disabled]
[IDE Mode]
[3F8/IRQ4]
Options
Enabled
Disabled
HDA Controller [Enabled]
[Enabled]
Enables the High Definition Audio Controller.
[Disabled]
Disables the controller.
Front Panel Type [HD Audio]
[AC97] Set the front panel audio connector (AAFP) mode to legacy AC’97
[HD Audio]Set the front panel audio connector (AAFP) mode to highdefinition audio.
Realtek LAN [Enabled]
[Enabled]
Enables Realtek LAN Controller
[Disabled]
Disables Realtek LAN Controller.
LAN Boot ROM [Disabled]
This item appears only when you enable the previous item(s).
[Disabled]Disables Realtek LAN Boot ROM.
[Enabled] Enables Realtek LAN Boot ROM.
J-Micron eSATA/PATA Controller [IDE Mode]
[Disabled]
[IDE Mode]
[AHCI Mode]
Disables the J-Micron controller.
Set to [IDE Mode] when you want to use the Serial ATA hard disk drives as
Parallel ATA physical storage devices.
Set to [AHCI] when you want the SATA hard disk drives to use the AHCI
(Advabced Host Controller Interface). The AHCI allows the onboard storage
driver to enable advanced Serial ATA features that increases storage
performance on random workloads by allowing the drive to internally
optimize the order of commands.
Serial Port1 Address [3F8/IRQ4]
Allows you to select the Serial Port1 base address.
Configuration options: [Disabled] [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
ASUS P7P55D LE
2-19
2.5.4
USB Configuration
The items in this menu allows you to change the USB-related features. Select an
item then press <Enter> to display the configuration options.
Advanced
BIOS SETUP UTILITY
USB Configuration
Options
Module Version - 2.24.5-13.4
USB Devices Enabled:
2 Hubs
USB Functions
Legacy USB Support
BIOS EHCI Hand-Off
Disabled
Enabled
[Enabled]
[Auto]
[Enabled]
The USB Devices Enabled item shows the auto-detected values. If no USB
device is detected, the item shows None.
USB Functions [Enabled]
[Enabled]
[Disabled]
Enables the USB Host Controllers.
Disables the controllers.
The following items appear only when you set USB Support to [Enabled].
Legacy USB Support [Auto]
[Disabled]
[Enabled]
[Auto]
Disables the function.
Enables the support for USB devices on legacy operating systems (OS).
Allows the system to detect the presence of USB devices at startup. If
detected, the USB controller legacy mode is enabled. If no USB device is
detected, the legacy USB support is disabled.
BIOS EHCI Hand-off [Enabled]
[Disabled]
[Enabled]
2-20
Disables the function.
Enables the support for operating systems without an EHCI hand‑off
feature.
Chapter 2: BIOS information
2.5.5
PCIPnP
The PCIPnP menu items allow you to change the advanced settings for PCI/PnP
devices.
Advanced
BIOS SETUP UTILITY
Advanced PCI/PnP Settings
WARNING: Setting wrong values in below sections
may cause system to malfunction.
Plug And Play O/S
NO: lets the BIOS
configure all the
devices in the
system.
[No]
Plug And Play O/S [No]
[Yes]
When set to [Yes] and if you install a Plug and Play operating system, the
operating system configures the Plug and Play devices not required for
boot.
When set to [No], BIOS configures all the devices in the system.
[No]
2.5.6
Intel VT-d [Disabled]
2.6
Power menu
[Disabled]
[Enabled]
Disables the Intel Virtualization Technology for Directed I/O.
Enables the Intel Virtualization Technology for Directed I/O.
The Power menu items allow you to change the settings for the Advanced
Power Management (APM). Select an item then press <Enter> to display the
configuration options.
Main
Ai Tweaker
BIOS SETUP UTILITY
Advanced
Power
Boot
Suspend Mode
Repost Video on S3 Resume
ACPI 2.0 Support
ACPI APIC Support
EuP Ready
[Auto]
[No]
[Disabled]
[Enabled]
[Disabled]
Tools
Exit
Select the ACPI state
used for System
Suspend.
APM Configuration
Hardware Monitor
←→
↑↓
+F1
F10
ESC
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.6.1
Suspend Mode [Auto]
Allows you to select the Advanced Configuration and Power Interface (ACPI) state
to be used for system suspend.
[S1 (POS) only] Sets the APCI suspend mode to S1/POS (Power On Suspend).
[S3 only]
Sets the APCI suspend mode to S3/STR (Suspend To RAM).
[Auto]The system automatically configures the ACPI suspend mode.
ASUS P7P55D LE
2-21
2.6.2
Repost Video on S3 Resume [No]
Determines whether to invoke VGA BIOS POST on S3/STR resume.
[No]
[Yes]
2.6.3
[Disabled]
[Enabled]
2.6.4
[Disabled]
[Enabled]
The system will not invoke VGA BIOS POST on S3/STR resume.
The system invokes VGA BIOS POST on S3/STR resume.
ACPI 2.0 Support [Disabled]
When set to [Disabled], the system will not add additional tables as per
ACPI 2.0 specifications.
When set to [Enabled], the system adds additional tables as per ACPI 2.0
specifications.
ACPI APIC Support [Enabled]
When set to [Disabled], the system disable the Advanced Configuration and
Power Interface (ACPI) support in the Advanced Programmable Interrupt
Controller (APIC).
When set to [Enabled], the ACPI APIC table pointer is included in the RSDT
pointer list.
2.6.5
EuP Ready [Disabled]
2.6.6
APM Configuration
[Disabled]
[Enabled]
Disables the Energy Using Products (EuP) Ready function.
Allows BIOS to switch off some power at S5 state to get system ready for
the EuP requirement. When set to [Enabled], power for WOL, WO_USB,
audio and onboard LEDs will be switched off at S5 state.
BIOS SETUP UTILITY
Power
APM Configuration
Restore on AC Power Loss
[Power Off]
Power On By RTC Alarm
[Disabled]
Power On By External Modems
[Disalbed]
Power On By PCI Devices
[Disabled]
Power On By PCIE Devices
[Disabled]
Power On By����������������������������
PS/2 Keyboard
[Disabled]
Power On By�������������������������
PS/2 Mouse
[Disabled]
<Enter> to select
whether or not to
restart the system
after AC power loss.
Restore On AC Power Loss [Power Off]
[Power Off]
[Power On]
[Last State]
The system goes into off state after an AC power loss.
The system goes into on state after an AC power loss.
The system goes into either off or on state, whatever the system state was
before the AC power loss.
Power On By RTC Alarm [Disabled]
[Disabled]
[Enabled]
2-22
Disables RTC to generate a wake event.
When set to [Enabled], the items RTC Alarm Date (Days) / System Time
will become user-configurable with set values.
Chapter 2: BIOS information
Power On By External Modems [Disabled]
[Disabled]Disables to power up the computer when the external modem receives a
call while the computer is in Soft-off mode.
[Enabled]The computer could be powered up when the external modem receives a
call while the computer is in Soft-off mode.
The computer cannot receive or transmit data until the computer and
applications are fully running. Thus, connection cannot be made on the first
try. Turning an external modem off and then back on while the computer is off
causes an initialization string that turns the system power on.
Power On By PCI Devices [Disabled]
[Disabled]
[Enabled]
Disables the PME to wake up from S5 by PCI devices.
Allows you to turn on the system through a PCI LAN or modem card. This
feature requires an ATX power supply that provides at least 1A on the
+5VSB lead.
Power On By PCIE Devices [Disabled]
Allows you to enable or disable the PCIE devices to generate a wake event.
[Disabled]Disables the PCIE devices to generate a wake event.
[Enabled]Enables the PCIE devices to generate a wake event.
Power On By PS/2 Keyboard [Disabled]
[Disabled]
[Enabled]
Disables the Power On by a PS/2 keyboard.
Sets specific keys on the PS/2 keyboard to turn on the system. This feature
requires an ATX power supply that provides at least 1A on the +5VSB lead.
Power On By PS/2 Mouse [Disabled]
[Disabled]
[Enabled]
ASUS P7P55D LE
Disables the Power On by a PS/2 mouse.
Enables the Power On by a PS/2 mouse. This feature requires an ATX
power supply that provides at least 1A on the +5VSB lead.
2-23
2.6.7
Hardware Monitor
BIOS SETUP UTILITY
Power
Hardware Monitor
CPU Temperature
MB Temperature
[35ºC/95ºF]
[34ºC/93ºF]
CPU Fan Speed
CPU Q-Fan Control
[3590RPM]
[Disabled]
Chassis Fan 1 Speed
Chassis Fan 2 Speed
Chassis Q-Fan Control
[N/A]
[N/A]
[Disabled]
Power Fan Speed
[N/A]
CPU
3.3V
5V
12V
[ 1.224V]
[ 3.344V]
[ 5.064V]
[11.928V]
Voltage
Voltage
Voltage
Voltage
CPU Temperature(PECI)
CPU/MB Temperature [xxxºC/xxxºF]
The onboard hardware monitor automatically detects and displays the CPU and
motherboard temperatures. Select Ignored if you do not wish to display the
detected temperatures.
CPU Fan Speed [xxxxRPM] or [Ignored] / [N/A]
Chassis Fan 1/2 Speed [xxxxRPM] or [Ignored] / [N/A]
Power Fan Speed [xxxxRPM] or [Ignored] / [N/A]
The onboard hardware monitor automatically detects and displays the CPU,
chassis, and power fan speed in rotations per minute (RPM). If the fan is not
connected to the motherboard, the field shows N/A. Select Ignored if you do not
wish to display the detected speed.
CPU Q-Fan Control [Disabled]
[Disabled]
Disables the CPU Q-Fan control feature.
[Enabled]
Enables the CPU Q-Fan control feature.
CPU Fan Profile [Standard]
This item appears only when you enable the CPU Q-Fan Control feature and
allows you to set the appropriate performance level of the CPU fan.
[Standard]Sets to [Standard] to make the CPU fan automatically adjust
depending on the CPU temperature.
[Silent]Sets to [Silent] to minimize the fan speed for quiet CPU fan
operation.
[Turbo] Set to [Turbo] to achieve maximum CPU fan speed.
Chassis Q-Fan Control [Disabled]
[Disabled]
[Enabled]
2-24
Disables the Chassis Q-Fan control feature.
Enables the Chassis Q-Fan control feature.
Chapter 2: BIOS information
Chassis Fan Profile [Standard]
This item appears only when you enable the Chassis Q-Fan Control feature
and allows you to set the appropriate performance level of the chassis fan.
[Standard]Sets to [Standard] to make the chassis fan automatically adjust
depending on the chassis temperature.
[Silent]Sets to [Silent] to minimize the fan speed for quiet chassis fan
operation.
[Turbo] Set to [Turbo] to achieve maximum chassis fan speed.
CPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage
The onboard hardware monitor automatically detects the voltage output through
the onboard voltage regulators. Select Ignored if you do not want to detect this
item.
2.7
Boot menu
The Boot menu items allow you to change the system boot options. Select an item
then press <Enter> to display the submenu.
Main
Ai Tweaker
BIOS SETUP UTILITY
Advanced
Power
Boot
Tools
Exit
Specifies the Boot
Device Priority
sequence.
Boot Settings
Boot Device Priority
Boot Settings Configuration
Security
A virtual floppy disk
drive (Floppy Drive B:
) may appear when you
set the CD-ROM drive
as the first boot
device.
Select Screen
←→
Select Item
↑↓
Enter Go to Sub Screen
F1
General Help
F10
Save and Exit
ESC
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.7.1
Boot Device Priority
BIOS SETUP UTILITY
Boot
Boot Device Priority
1st Boot Device
2nd Boot Device
3rd Boot Device
[Removable Dev.]
[Hard Drive]
[ATAPI DVD-ROM]
Specifies the boot
sequence from the
available devices.
1st ~ xxth Boot Device [Removable Dev.]
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.
Configuration options: [Removable Dev.] [Hard Drive] [ATAPI CD-ROM] [Disabled]
ASUS P7P55D LE
2-25
2.7.2
Boot Settings Configuration
Quick Boot [Enabled]
[Disabled]
When set to [Disabled], BIOS performs all the POST items.
[Enabled]When set to [Enabled], BIOS skips some power on self tests (POST) while
booting to decrease the time needed to boot the system.
Full Screen Logo [Enabled]
[Disabled]
[Enabled]
Disables the full screen logo display feature.
Enables the full screen logo display feature.
Set this item to [Enabled] to use the ASUS MyLogo 2™ feature.
AddOn ROM Display Mode [Force BIOS]
[Force BIOS]
The third-party ROM messages will be forced to display during the boot
sequence.
[Keep Current] The third-party ROM messages will be displayed only if the third-party
manufacturer had set the add-on device to do so.
Bootup Num-Lock [On]
[Off]
[On]
Sets the power-on state of the NumLock to [Off].
Sets the power-on state of the NumLock to [On].
Wait For ‘F1’ If Error [Enabled]
[Disabled]
[Enabled]
Disables this function.
The system waits for the <F1> key to be pressed when error occurs.
Hit ‘DEL’ Message Display [Enabled]
[Disabled]
[Enabled]
2.7.3
Disables this function.
The system displays the message “Press DEL to run Setup” during POST.
Security
The Security menu items allow you to change the system security settings. Select
an item then press <Enter> to display the configuration options.
Change Supervisor Password
Select this item to set or change the supervisor password. The Supervisor
Password item on top of the screen shows the default Not Installed. After you set
a password, this item shows Installed.
To set a Supervisor Password:
2-26
1.
Select the Change Supervisor Password item and press <Enter>.
2.
From the password box, type a password composed of at least six letters and/or
numbers, then press <Enter>.
3.
Confirm the password when prompted.
Chapter 2: BIOS information
The message Password Installed appears after you successfully set your
password.
To change the supervisor password, follow the same steps as in setting a user
password.
To clear the supervisor password, select the Change Supervisor Password then
press <Enter>. The message Password Uninstalled appears.
If you forget your BIOS password, you can clear it by erasing the CMOS Real
Time Clock (RTC) RAM. See section Rear panel connectors for information on
how to erase the RTC RAM.
After you have set a supervisor password, the other items appear to allow you to
change other security settings.
User Access Level [Full Access]
This item allows you to select the access restriction to the Setup items.
[No Access]
Prevents user access to the Setup utility.
[View Only]Allows access but does not allow change to any field.
[Limited]Allows changes only to selected fields, such as Date and Time.
[Full Access]
Allows viewing and changing all the fields in the Setup utility.
Change User Password
Select this item to set or change the user password. 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 Change User Password item and press <Enter>.
2.
On the password box that appears, type a password composed of at least six letters
and/or numbers, then press <Enter>.
3.
Confirm the password when prompted.
The message Password Installed appears after you set your password
successfully.
To change the user password, follow the same steps as in setting a user password.
Clear User Password
Select this item to clear the user password.
Password Check [Setup]
[Setup]
[Always]
ASUS P7P55D LE
BIOS checks for user password when accessing the Setup utility.
BIOS checks for user password both when accessing Setup and booting
the system.
2-27
2.8
Tools menu
The Tools menu items allow you to configure options for special functions. Select
an item then press <Enter> to display the submenu.
2.8.1
ASUS O.C. Profile
This item allows you to store or load multiple BIOS settings.
Add Your CMOS Profile
Allows you to save the current BIOS file to the BIOS Flash. In the Name sub-item,
type your profile name and press <Enter>, and then choose a profile number to
save your CMOS settings in the Save to sub-item.
Load CMOS Profiles
Allows you to load the previous BIOS settings saved in the BIOS Flash. Press
<Enter>, and choose a profile to load.
Start O.C. Profile
Allows you to run the utility to save and load CMOS. Press <Enter> to run the
utility.
ASUSTek O.C. Profile Utility V2.00b
Current CMOS
BOARD: P7P55D LE
VER: 0166
DATE: 07/08/2009
Restore CMOS
BOARD:Unknown
VER: Unknown
DATE: Unknown
PATH: A:\
A:
Note
[Enter] Select or Load
[Up/Down/Home/End] Move
2-28
[Tab] Switch
[V] Drive Info
[B] Backup
[Esc] Exit
•
This function can support devices such as a USB flash disk with FAT 32/16
format and single partition only.
•
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.
•
Only the CMO file can be loaded.
Chapter 2: BIOS information
2.8.2
AI NET 2
BIOS SETUP UTILITY
AI NET 2
Pair Status
Check Realtek LAN
cable during POST.
Length
Check Realtek LAN cable
Tools
[Disabled]
It will take 3 to 10
seconds to diagnose
LAN cable.
Check Realtek LAN Cable [Disabled]
[Disabled]
BIOS will not check the Realtek LAN cable during the Power-On Self-Test
(POST).
BIOS checks the Realtek LAN cable during the Power-On Self-Test
(POST).
[Enabled]
2.8.3
Express Gate [Auto]
Allows you to enable or disable the ASUS Express Gate feature. The ASUS
Express Gate feature is a unique instant-on environment that provides quick
access to the Internet browser and Skype. Configuration options: [Disabled]
[Enabled] [Auto]
Enter OS Timer [10 Seconds]
Sets countdown duration that the system waits at the Express Gate’s first
screen before starting Windows or other installed OS. Choose [Prompt User]
to stay at the first screen of Express Gate for user action.
Configuration options: [Prompt User] [1 second] [3 seconds] [5 seconds] [10
seconds] [15 seconds] [20 seconds] [30 seconds]
Reset User Data [No]
Allows you to clear Express Gate’s user data.
[Reset]When setting this item to [Reset], ensure that you save the setting
to the BIOS so that the user data will be cleared the next time you
enter the Express Gate. User data includes the Express Gate’s
settings as well as any personal information stored by the web
browser such as bookmarks, cookies, browsing history. This is
useful in the rare case where corrupt settings prevent the Express
Gate environment from launching properly.
[No]Set to [No] to disable the Reset User Data function when entering
the Express Gate.
The first time wizard will run again when you enter the Express Gate
environment after clearing its settings.
ASUS P7P55D LE
2-29
2.9
Exit menu
The Exit menu items allow you to load the optimal or failsafe default values for the
BIOS items, and save or discard your changes to the BIOS items.
Main
Ai Tweaker
Exit Options
Exit & Save Changes
Exit & Discard Changes
Discard Changes
Load Setup Defaults
BIOS SETUP UTILITY
Advanced
Power
Boot
Tools
Exit
Exit system setup
after saving the
changes.
F10 key can be used
for this operation.
Select Screen
←→
Select Item
↑↓
Enter Go to Sub Screen
F1
General Help
F10
Save and Exit
ESC
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
Pressing <Esc> does not immediately exit this menu. Select one of the options
from this menu or <F10> from the legend bar to exit.
Exit & Save Changes
Once you are finished making your selections, choose this option from the Exit
menu to ensure the values you selected are saved to the CMOS RAM. An onboard
backup battery sustains the CMOS RAM so it stays on even when the PC is turned
off. When you select this option, a confirmation window appears. Select Ok to save
changes and exit.
If you attempt to exit the Setup program without saving your changes, the
program prompts you with a message asking if you want to save your changes
before exiting. Press <Enter> to save the changes while exiting.
Exit & Discard Changes
Select this option only if you do not want to save the changes that you made to
the Setup program. If you made changes to fields other than System Date, System
Time, and Password, the BIOS asks for a confirmation before exiting.
Discard Changes
This option allows you to discard the selections you made and restore the
previously saved values. After selecting this option, a confirmation appears. Select
Ok to discard any changes and load the previously saved values.
Load Setup 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 default values. Select Exit & Save Changes or
make other changes before saving the values to the non-volatile RAM.
2-30
Chapter 2: BIOS information