DFI LanParty UT RDX200 CF-DR Motherboard
Chipset Intro
Introducing Radeon Xpress 200 CrossFire
ATI’s Radeon Xpress 200 CrossFire chipset for both Intel® and
AMD-based processors is built for the dual slot PCI Express
architecture and delivers leading graphics performance, bandwidth, and
advanced functionality for the ultimate gaming platform.
Multiply and Conquer with CrossFire.
Radeon Xpress 200 CrossFire for AMD Processors
AMD Athlon 64 X2, AMD Sempron, AMD Athlon 64 and AMD Athlon 64 FX processors
Support for 64-bit extended operating systems
800MHz and 1GHz HyperTransport interface speeds
Best-in-class Performance for CrossFire Operation
With dual dedicated and balanced PCI Express graphics ports, the Radeon Xpress 200
CrossFire supports up to 2GB/s peak bandwidth to both graphics cards making it the ideal
chipset for Multi GPU systems. The unique chipset architecture creates no interference with
any other PCI Express peripherals. CrossFire operation does not limit other PCI Express
Built for the Enthusiast
The Radeon Xpress 200 CrossFire is an enthusiast-class chipset that delivers unmatched
performance when paired with two ATI-based graphics cards. This chipset supports all three
CrossFire performance rendering modes: SuperTiling, Scissor, and AFR. CrossFire
acceleration is enabled by default for every game all the time making it the fastest gaming
platform out there.
Stunning Overclocking Capabilities
ATI’s Radeon Xpress 200 CrossFire offers gamers and enthusiasts tons of advanced features
that will help move their performance to the next level. For the overclocking enthusiasts, the
Radeon Xpress 200 CrossFire provides a wide array of adjustment capabilities such as
memory voltage, CPU core voltage, chipset voltage and others to allow each user to maximize
their performance potential.
High Build Quality and Excellent Board Layout
The RDX200 is built to perfection using a 6-layer PCB and high-quality components. UV
sensitive (glow in the dark under dark light) slots, and a magnetic-levitation fan on the chipset
heatsink make this mobo quite the looker at LAN parties as well.
DFI applies a unique board layout by locating 4 DIMM slots between the CPU and IO ports.
This design works very well to keep the air flowing and component temperatures down.
ATI CrossFire Multi VPU Technology Support
The DFI LanParty UT RDX200 CF-DR is a CrossFire motherboard. That is to say that it
incorporates full support for ATI CrossFire technology. As is the case with nForce4 SLI mobos,
the two PCI Express x16 slots on the RDX200 can be configured for x16 + x1 mode in single
graphics card mode or dual x8 mode for ATI CrossFire mode.
Unlike many nForce4 SLI mobos, however, the DFI RDX200 doesn’t feature a paddle card for
changing between single and dual graphics card modes. Instead, the switching is done via the
electronics. All the user has to do is to perform the switch in the BIOS or let the BIOS detect it
100% Japanese Sourced Capacitors/ 4-Phase PWM
A 4 phase PWM design provides the system extra stability and reliability under heavy-loading
and overclocking conditions. The heatsinks attached to the MOSFETs ensure the
temperatures stay in the safe zone when the processor runs under full loads. All capacitors on
this motherboard are 100% Japanese-sourced for unquestionable levels of quality.
The 24-pin and 8-pin/4-pin power connector are shown above located side-by-side at the right
edge of the board. Users can use either a standard 4-pin or the more robust 8-pin connector
on the DFI motherboard.
Rear IO Ports
1 PS/2 mouse port
1 PS/2 keyboard port
2 S/PDIF RCA jacks (S/PDIF-in and S/PDIF-out)
Karajan audio module (6 audio jacks, see below)
1 IEEE 1394a port
2 RJ45 Gigabyte LAN ports
6 USB 2.0/1.1 ports
First Retail AMD Motherboard featuring to Feature Azalia High Definition Audio
Karajan audio module: the Azalia High Definition audio Codec that is isolated on the module
for improved signal-to-noise performance
Realtek ALC882 8-channel High Definition Audio CODEC provides:
6 audio jacks
1 CD-in connector
1 front audio connector
True stereo line level outputs
S/PDIF-in/out interface
Major options and adjustable range for overclocking:
CPU FSB Frequency
200 to 500MHz in 1MHz increments
PCIe Frequency
SB PCIE Voltage
NB Analog Voltage
LDT Voltage Control
NB Core Voltage
RAM Voltage Control
2.5V to 4.03V in 0.02V to 0.05V increments
CPU Multiplier
Depending on CPU, 0.5x increments
CPU Voltage
0.8V to 1.55V in 0.025V increments
PLUS 2.4%~36.0% in 2.4% increments
(Maximum vCore 2.108V)
The DFI LanParty nForce4 series boards are famous for offering the enthusiast almost every
BIOS option imaginable. The DFI RDX200 goes even further, extending memory voltage to
4.03V and CPU voltage to as high as 2.108V.
The most exciting one has to be the "impossible" option of running 4DS (Dual Side) DIMMs at
1T Command Rate and a working CAS 1.5 option in the BIOS.
PCI Express x16 slots Configuration:
Dual Slot Configuration
GFX0 Link Width
GFX1 Link Width
(only available when “Dual Slot” enabled)
The PCI Express x16 slot operating modes are easily configured in the BIOS, and the user can
choose the specific link width of the two slots as well.
DRAM related parameters:
DRAM Timing Parameters
DRAM Frequency Set(MHz)
Command Pre Clock(CPC)
CAS latency Control(Tcl)
1.0 to 4.5, 0.5 increments
RAS# to CAS# delay(Trcd)
Auto/00~07 Bus Clock
Min RAS# Active Time(Tras)
Auto/00~15 Bus Clock
Row Precharge time(Trp)
Auto/00~07 Bus Clock
Row Cycle time(Trc)
Auto/07~22 Bus Clock
Row refresh cycle time(Trfc)
Auto/09~24 Bus Clock
Row to Row delay(Trrd)
Auto/00~07 Bus Clock
Write recovery time(Twr)
Auto/02/03 Bus Clock
Write to Read delay(Twtr)
Auto/01/02 Bus Clock
Read to Write delay(Trwt)
Auto/00~08 Bus Clock
Refresh period(Tref)
Auto etc.
DRAM Bank Interleaving
Like the LanParty nForce4 series, DFI has provided a whole host of detailed options on
memory parameter tuning for this RDX200 motherboard. That’s really good news for
enthusiasts and experienced users as they have the potential to achieve higher performance
levels through the tuning of these parameters to better fit their own systems.
DRAM Configuration Parameters
DQS Skew Control
DQS Skew Value
DRAM Driver Strength
DRAM Data Driver Strength
MAX Async Latency
Read Preamble Time
Idle cycle Limit
0/4/8/16/32/64/128/256 Cycle
Dynamic Counter
R/W Queue Bypass
Bypass MAX
32Byte Granularity
Another area in which the RDX200 actually exceeds its predecessor (i.e. the LanParty
nForce4 series) is this: most DRAM modules run perfectly using the “By SPD” mode on this
RDX200. This was not the case with previous LanParty boards as manual settings were
always needed. This improvement is especially important for DIY beginners as memory
compatibility issues are greatly reduced.