Introduction

DFI RDX200 CF-DR

Almost a year ago, DFI introduced their LANParty NF4 motherboards. While all proved extremely popular (mainly for their incredible performance and sweet bundle), the SLI versions were the apple of DFI's eye. Enthusiasts loved the incredible performance  that resulted from NVidia's NF4 chipset as well as the ability to pair up two like cards and significantly improve the graphics performance of their system. 

Over the past year the DFI NF4 motherboards have arguably become the most popular boards on the market. Not only has DFI developed one of the largest support forums around, they also have numerous threads spread across enthusiast sites dedicated to their boards. Then there are the BIOS', where it seems a new one comes out about one a day or so.

While NVidia and its NF4 chipset have had more than a year to entrench itself as the chipset of choice for just about everyone, can the ATI Radeon Express200 chipset cut into NVidia's market domination? Another feature of the RDX200 CF-DR is ATI's long awaited dual graphics solution, "Crossifire". Though Crossfire won't be the focus of this article, keep an eye out as very soon we'll be covering ATI's newest graphics solution.

Today, Legit Reviews takes a look at DFI's RDX200 CF-DR. Did DFI bite off more than they could chew? Did waiting almost an entire year to release their graphics solution help ATI learn from NVidia's successes and failures? And, most importantly (at least to me, today) does the RDX200 CF-DR live up to the reputation DFI has developed with their LANParty boards?

Let's look over the specs, and move on to the layout and some testing.

DFI RDX200 bundle

CPU
  • AMD Athlon 64 X2 / Athlon 64 FX / Athlon 64 / Sempron
  • Socket 939
Chipset
  • ATI chipset
    - Northbridge: ATI Radeon Xpress 200 CrossFire
    - Southbridge: ATI SB450
Front Side Bus
  • 2000MT/s HyperTransport interface
Memory
  • Four 184-pin DDR SDRAM DIMM sockets
  • Supports dual channel (128-bit wide) memory interface
  • Supports up to 4GB system memory
  • Supports PC2100 (DDR266), PC2700 (DDR333) and PC3200 (DDR400) DDR SDRAM DIMM
BIOS
  • Award BIOS
  • CMOS Reloaded
  • CPU/DRAM overclocking
  • CPU/DRAM/Chipset overvoltage
  • 4Mbit flash memory
Power Management
  • Supports ACPI STR (Suspend to RAM) function
  • Wake-On-Events include:
        - Wake-On-PS/2 Keyboard/Mouse
        - Wake-On-USB Keyboard/Mouse
        - Wake-On-Ring
        - Wake-On-LAN
        - RTC timer to power-on the system
  • AC power failure recovery
Hardware Monitor
  • Monitors CPU/system/chipset temperature
  • Monitors 12V/5V/3.3V/Vcore/Vbat/5Vsb/Vchipset/Vdram voltages
  • Monitors the speed of the CPU fan, Fan 2 and Fan 3 fan
  • CPU Overheat Protection function monitors CPU temperature during system boot-up
Audio
  • Karajan audio module
        - Realtek ALC882 8-channel High Definition Audio CODEC
        - 6 audio jacks
        - 1 CD-in connector
        - 1 front audio connector
  • True stereo line level outputs
  • S/PDIF-in/out interface
LAN
  • Dual Gigabit LAN - Marvell 88E8053 PCI Express and Marvell 88E8001 PCI LAN
  • Fully compliant to IEEE 802.3 (10BASE-T), 802.3u (100BASE-TX) and 
    802.3ab (1000BASE-T) standards
IDE
  • Supports two IDE connectors that allow connecting up to four UltraDMA 133Mbps 
    hard drives
Serial ATA with RAID
  • Four Serial ATA ports supported by the ATI SB450 chip
        - SATA speed up to 1.5Gb/s
        - RAID 0 and RAID 1
  • Four Serial ATA ports supported by the Silicon Image Sil 3114 chip
        - SATA speed up to 1.5Gb/s
        - RAID 0, RAID 1, RAID 0+1 and RAID 5
IEEE 1394
  • VIA VT6307
  • Supports two 100/200/400 Mb/sec ports
Rear Panel I/O Ports
  • 1 mini-DIN-6 PS/2 mouse port
  • 1 mini-DIN-6 PS/2 keyboard port
  • 2 S/PDIF RCA jacks (S/PDIF-in and S/PDIF-out)
  • Karajan audio module (6 audio jacks)
  • 1 IEEE 1394 port
  • 2 RJ45 LAN ports
  • 6 USB 2.0/1.1 ports
I/O Connectors
  • 1 connector for 2 additional external USB 2.0/1.1 ports
  • 1 connector for 1 external IEEE 1394 port
  • 1 connector for 1 external serial port
  • 1 connector for the Karajan audio module
  • 1 front audio connector for external line-out and mic-in jacks (on the Karajan audio module)
  • 1 CD-in internal audio connector (on the Karajan audio module).
  • 1 S/PDIF connector for optical cable connection
  • 1 IrDA connector
  • 1 CIR connector
  • 8 Serial ATA connectors
  • 2 IDE connectors
  • 1 floppy connector
  • 1 24-pin ATX power connector
  • 1 8-pin ATX 12V power connector
  • 1 4-pin 5V/12V power connector (FDD-type)
  • 1 front panel connector
  • 5 fan connectors
  • 4 diagnostic LEDs
  • EZ touch switches (power switch and reset switch)
Expansion Slots
  • 2 PCI Express x16 slots CrossFire mode - Each x16 slot operates at x8 bandwidth. Single VGA mode - PCIE1 slot operates at x16 bandwidth. PCIE3 slot operates at x1 bandwidth.
  • 1 PCI Express x1 slot
  • 3 PCI slots
PCB
  • ATX form factor
  • 24cm (9.45") x 30.5cm (12")

Now that we know what the basic features of the board are we can take a look at the layout of the motherboard.

The Layout: CPU Socket & Memory

DFI RDX200 CF-DR

The RDX200 CF-Dr features the exact same color scheme found on DFI's LANParty NF4 boards with a black PCB covered with fluorescent orange and yellow connectors, perfect for those who have case windows and fluorescent lighting.

Built around AMD's socket 939, the RDX200 CF-DR supports all AMD socket 939 processors including the Athlon 64 X2, Athlon 64 FX, Athlon 64, and Sempron. For those of you into the latest Opteron craze, DFI's official word is there is no support for socket 939 Opterons (because this is a desktop based board and the Opteron is actually a server CPU..... however I have not seen any problems arising from this combination. 

DIMM slots

The DFI RDX200 CF-DR supports 4GB of 184 pin DDR1 memory in dual channel. To run in dual channel make sure you use either both run the memory in the color matched channels (yellow or orange slots), or fill up all four memory slots. Right away a few things that should jump out at you are the DIMM slots and the placement of the CPU socket. We'll touch more on both topics in a minute, but from an initial inspection the DFI RDX200-CF-DR is an attractive and fairly well designed board.

DIMM slots

One of my favorite aspects of the NF4 Ultra and SLI boards was that DFI rotated the memory slots to a horizontal position over the CPU socket, allowing the internal case airflow to help cool the memory modules. While this design is a moot point for those that have heat sinks like Thermalight XP-120, those who use water or stock cooling might have to add an extra fan to push air over their memory modules. If you look at the bigger picture (figuratively) then you'll notice the memory is situated in the upper left corner of the board just under where most power supplies sit (and generate heat), and are perpendicular to the top x16 PCI-E slot, away from the air flow most case manufacturers try to create to cool a systems components.

CPU/Memory area

As far as spacing goes, I don't see much issue with any particular cooling solution. those using HSF with large bases may encounter issues when trying to utilize the boards orange memory slots, and those who use Cooler Master's Aquagate Mini (water cooling) may have issues mounting their CPU heatsink. Other than that, the CPU socket area is organized in such a way to maximize the cooling generated by the CPU HSF.

DFI RDX200 CF-DR Upper Left Section

While we touched on the CPU socket above, I wanted to revisit it for a couple of different reason. First, DFI has done an outstanding job adding passive coolers to the boards mosfets. I don't think the majority of users really appreciate the quality of work that goes into DFI's boards. Second, DFI has moved the CPU socket to the middle of the board, slightly above center. This created problems for me and my HSPC Tech Station during testing as the cooler would not fit under the HDD rack. However the CPU socket placement should not cause problems for anyone actually using a case. 

DFI RDX200 CF-DR power connectors

The RDX200 CF-DR requires a 24 pin power ATX PSU, and as stated in their support forums, DFI boards do not support 20 pin power supplies. Also of note here is the usage of an 8-pin 12V connector, which is recommended, but not required. The instruction manual does say that a 4-pin connector will work fine (As always, read the manual before connecting anything to your motherboard).

The Layout: PCI/PCI-E Slots and Southbridge

Moving along to the PCI/PCI-E slots we found that the DFI RDX200 CF-DR features a pair of x16 PCI-E slots (much like the SLI board, when both slots are used, they both switch to x8), a x1 PCI-E slot, and three PCI slots. What is conspicuously absent is the jumper system that DFI introduced with their LANParty NF4.

DFI RDX200 CF-DR PCI slots

In the upper right hand corner of the above picture you will notice the 4-pin floppy type power connector; this connector provides more stability to the board, especially during Crossfire operation. While much has been made of this connector and whether it is needed, I asked DFI support for a final answer and theirs was "We didn't put it there for looks", which means it should be used.

DFI RDX200 CF-DR PCI-E slots

Another point worth mentioning is the space between the two x16 PCI-E slots. DFI increased the spacing noticeably, which should definitely help with those two slot video card coolers ATI loves during Crossfire operation.

DFI RDX200 CF-DR IDE Connections

Something that may surprise you, as it did me, is the absence of the IDE RAID capability. I've never used IDE drives in a RAID configuration, but as SATA drives become the standard, there really is no use for IDE RAID. The RDX200 CF-DR supports a pair of IDE connectors that allow you to connect up to four IDE UltraDMA 133 devices.

DFI RDX200 CF-DR chipsets

The RDX200CF-DR is based on ATI's Radeon Xpress 200 chipset. The Xpress 200 offers 22 PCI Express lanes, four of which are dedicated to PCI-E peripherasls and the x1 PCI-E slot. Sixteen more are dedicated to the graphics solution (x16 for a single card, and x8 for dual graphics solutions). The last two lanes act as an interconnect to the the ATI SB450 Southbridge chip.

DFI RDX200 CF-DR Chipset fan

If the Northbridge chipset fan looks familiar it is because the exact same one used on the LANParty NF4 Series. What is different is the addition of a passive cooler to the Southbridge chipset.

The ATI SB450 Southbridge has developed a bit of a bad reputation for its poor USB performance. While it is true that it is slower than other solutions, and that it will affect transfer speeds for those that use external USB Hard Drives or things like USB keys, the SB450 does support USB 2.0 keyboards, mice and any other peripheral you might care to use.

DFI RDX200 CF-DR Lower right corner

the RDX200 CF-DR has a pair of SATA solutions. First, the SB450 SB chipset supports 1.5GB/s as well as RAID 0 and RAID 1.  The second solution, the Silicon Image Sil 3114 chip, also supports 1.5GB/s, as well as RAID 0, 1, 0+1, and RAID 5.

DFI RDX200 CF-DR Silicon Image SATA

If this is less than impressive to you, do not feel alone. With the new standard being SATA 2.5, which among other things supports NCQ and 3.0GB/s speeds, this is hardly cutting edge technology and a definite disappointment thus far with everything else this board has to offer. I'll give ATI credit for at least allowing RAID 5, but this is definitely going to hurt this board in the long run.

The Layout: LAN/Firewire/Audio

Marvel chip

The RDX200 CF-DR features Dual Gigabit LAN through the Marvell 88E8053 PCI Express and Marvell 88E8001 PCI LAN.

Via chip

For anyone who uses 1394 Firewire, the VIA VT6307 chip supports two 100/200/400 Mb/sec ports.

ITE sensor

The ITE chip monitors CPU/system/chipset temperature, 12V/5V/3.3V/Vcore/Vbat/5Vsb/Vchipset/Vdram voltages, as well as the speed of the CPU fan, Fan 2 and Fan 3 fan. During the system boot the CPU Overheat Protection function monitors CPU temperature. While no monitoring program is perfect, I've come to really like DFI's ITE Smart Guardian.

Front Panel Connectors

The RDX1200 CF-DR front connectors are clearly marked, something I think all board makers need to do. Heck, why don't we really make things simple and have a standardized layout, then maybe case manufacturers can simply use a standard plug in for their front panels, making things easier for everyone. (okay, that's my rant for the day)

Another feature, and one I've come to greatly appreciate with DFI boards, is the easy-on/ reset switches. These are invaluable for testing on an open bench or while trouble shooting a system. 

Rear Panel Connectors

The rear panel of the RDX200 CF-Dr includes the typical array of connectors. Mini-DIN-6 PS/2 mouse and keyboard ports, 2 S/PDIF RCA jacks, one IEEE 1394 Port, two RJ45 LAN ports, and six USB 2.0/ 1.1 ports.

Karajan Audio Module

The Karajan audio module is basically the same as that found on the NF4 LANParty boards. Supporting six audio jacks, a CD-in connector, as well as a front audio connector, the only difference this time around is that this module supports High Definition Audio through the Realtek ALC882 8-channel High Definition Audio CODEC, FINALLY....HD audio! 

Karajan Audio Module

All in all, my gripes with the board to this point are few, and for the most part small. I think the placement of the DIMM slots is an issue. With memory modules running hotter and hotter, the air flow to your memory is almost as critical as the cooling of your CPU, chipset, and graphics cards. Placing the DIMM slots where they are really limits the air flow over them, to me at least they just don't fit there as part of the overall cooling of your system.

Other than that, my only gripe is the RAID situation being so limited. Although DFI attempted to address that with the Silicon image 3114 chip, I think most people will be disappointed to see the lack of choices overall. I think the usage of ATI's SB450 southbridge chipset really hamstrung DFI, but from the whispers around the web, the ULi chip was even more troublesome when coupled with the ATI Radeon Xpress200 Chipset....so it may have come down to the lesser of two evils. 

With all that said and done thisboard seems to be built for speed. The quality is definitely there in construction, now let's see how this board stacks up under a variety of circumstances.

The DFI RDX200 BIOS

RDX200 Post Screen

Those of you that love the DFI NF4 LANParty BIOS' are going to love the RDX200 CF-DR's BIOS, and those of you that hated the DFI NF4 LANParty's BIOS are probably going to hate the RDX200 CF-DR's BIOS. To make it a little clearer, the NF4 LANParty BIOS is probably the most customizable and extensive BIOS I have ever seen. Not only that, those of you have owned the board and frequented the DFI forums are I'm sure quite familiar with Oskar Wu and the rest of the crowd, who seemingly post new BIOS' on a daily basis (okay, a slight exaggeration, but you get my point).

The RDX200 CF-DR easily exceeds the NF4 LANParty boards in the customization category. It's almost as if a company actually stopped and listened to the the target audience before generating this board.

 Genie BIOS top

Upon initial inspection, the DFI RDX200 CF-DR BIOS looks almost identical to that of the LANParty NF4 boards, but rest assured, this board has everything DFI's NF4 boards do, and then some.

Genie BIOS bottom

While the CPU VID Control (voltage to your CPU) and CPU VID Startup Control (voltage applied to the CPU during POST) is the same as the DFI LANParty NF4 boards with a max voltage of 1.55V. DFI added several more options to the CPU VID Special Control menu (This  setting allowed you to add extra voltage to the processor that is not normally available. Before tweaking this setting, make sure you do you math as this is presented in percentages, a simple mistake here could easily kill your processor). 

FSB Frequency

Another hint of the crowd this board is aimed at, the FSB Bus Frequency scales from 200 all the way up to 500! I'm skeptical that anyone will ever actually use a 500FSB setting, but just to have that option is pretty sweet.

DRAM Voltage Control

Those of you who have used the NF4 LANParty boards will remember the crazy voltages that those boards allowed for the memory. The issue was that you always had to change the 5V jumper in the upper corner of the board. Some people had problems following directions and blew up their CPUs, motherboard, memory oer all of the above because they didn't follow the very specific directions for changing the jumper.

DFI made the entire process much simpler with the RDX200 CF-DR by removing the jumper altogether. Now, straight from the BIOS you can set the DRAM voltage anywhere from 2.4 all the way up to 4.03V. This is one big feature that sets DFI boards apart from other enthusiast boards on the market.

The DFI RDX200 BIOS Continued

DRAM Configuration Screen

Look familiar? Those of you that loved, or hated, the DRAM configuration screen found on DFI's NF4 boards are all too familiar with this site. While there are limitless combinations to be found, the DFI support forums and more specifically their memory settings database are a great resource for anyone who wants to get the most out of their board.

Dual Slot option

The DUAL SLOT CONFIGURATION screen enables or disables dual card ability (Note that you still must enable Crossfire from within ATI's Control Center in Windows)

GFX Link

The GFX0 and GFX1 Link Width Settings represent the PCI-E bus width for the graphics cards. I tried benchmarking with a variety of settings and found very little to no difference between x16 and x8 with two cards inserted in the board.

GFX0 Link Width

GFX1 Link Width

Aquamark 3 Score

 x 8

x8

69,528

x12

x8

69,542

x16

x12

69,586

 

GFX Link

Those of you who love to explore and torture yourselves with BIOS tinkering will love the RDX200 BIOS, which is easily the most extensive I have ever seen. Don't forget to use the DFI "CMOS Reloaded" feature before tweaking your board as keeping a few safe BIOS configurations can prevent a lot of wasted time as you go. Also remember to keep in mind DFI Street, DFI's support forum which is chalk full of wise people who obviously spend 24/7 in front of their DFI based systems.

The Test Setup

Legit Test Bench

 

For testing purposes I used the following components.

Test System:

The DFI RDX200 CF-DR Test Platform

Component

Brand/Model

Live Pricing

Processor

AMD Athlon 64 X2 3800+

Motherboard

DFI RDX200 CF-DR

Video Cards

X850 Crossfire

Memory

2GB OCZ Platinum PC-3200

Hard Drive

Seagate Barracuda 7200.7

Cooling

Corsair COOL

Power Supply

Antec TruePower 2.0 550W

Operating System

Windows XP Professional

Testing included:

Absent from the benchmarking list is Everest Home Edition 2.0. Every time I attempted to run this program, the system would reboot. My thinking at this point is that Everest does not yet support the chipset.

Benchmarking

Sisoft Sandra 2005 SR2:

SiSoftware, founded in 1995, is one of the leading providers of computer analysis, diagnostic and benchmarking software. The flagship product, known as "SANDRA", was launched in 1997 and has become one of the most widely used products in its field. SANDRA is used by almost 400 world-wide IT publications, magazines, review sites to analyze the performance of today?s computers.

Multi-Core Support As well as SMP (multi-processor) and SMT (multi-threading/Hyper-Threading) support we have added multi-core support for future AMD and Intel CPUs. The benchmarks have been optimized to schedule the optimum number of threads on the optimum (virtual) CPU on both multi-core and Hyper-Threaded computers.

Sisoft Sandra CPU Arithmatic

Sisoft Sandra Memory Bandwidth

Sandra Memory Bandwidth

PCMark05:

PCMark05 is an application-based benchmark and a premium tool for measuring overall PC performance. It uses portions of real applications instead of including very large applications or using specifically created code. This allows PCMark05 to be a smaller installation as well as to report very accurate results. As far as possible, PCMark04 uses public domain applications whose source code can be freely examined by any user.

PCMark05

3DMark03 Build 360

3DMark03 is a collection of  four 3D game based tests. Each 3DMark03 game test is a real-time rendering of a 3D scenario. It is important to note that these renderings are not merely animations or a set of recorded events; they are designed to function like 3D games work. As with 3D games, all computations are performed in real time. This is a critical part of FutureMarks philosophy of 3D graphics benchmarking.

3DMark03

CINEBENCH 2003

CINEBENCH 2003 is the free benchmarking tool for Windows and Mac OS based on the powerful 3D software CINEMA 4D R8. The tool is set to deliver accurate benchmarks by testing not only a computer's raw processing speed but also all other areas that affect system performance such as OpenGL, multithreading, multiprocessors and Intel's HT Technology. CINEBENCH 2003 includes render tasks that test the performance of up to 16 multiprocessors on the same computer.

Cinebench 2003

Cinebench 2003

ScienceMark 2.0 Final:

Science Mark 2.0 is an attempt to put the truth behind benchmarking. In an attempt to model real world demands and performance, ScienceMark 2.0 is a suite of high-performance benchmarks that realistically stress system performance without architectural bias. Lower results (time in seconds) represent better performance. All of our testing was completed on the 32 Bit Final benchmark version that is dated March 21, 2005.

Sciencemark 2.0

Sciencemark 2.0

Super PI Mod 1.4

Super Pi is a program a lot of enthusiasts use to benchmark overall system performance, as the program is capable of calculating pi up to 33.55 million digits on a timer.  Many overclockers and enthusiasts are in a battle to get the lowest 1M Super Pi time possible

Super Pi Mod 1.4

Benchmarking continued

AquaMark3

AquaMark3 is a powerful tool to determine reliable information about the gaming performance of a computer system. Again, resolution was set 1024x768.

Aquamark3

Doom 3

Doom 3 is one of the most system taxing games available. Its popularity also makes it a great choice for system benchmarking. I like to use Time Demo 1 with resolution set to 1024x768 with detail set to high.

Doom 3

Far Cry- Generator

Far Cry is another super popular FPS title that seriously taxes your systems graphics. HardwareOC developed this specialized benchmarking utility that automatically runs the test twice and averages out the score. V 1.41 was used here

Far Cry

As you can see with all the testing, the RDX200 CF-DR shows virtually the same performance as the NF4 chipset. Though I didn't include any Crossfire vs SLI benchmarks (we're focusing on the motherboard), rest assured that we will cover tat angle  shortly.

Overclocking

When it comes to overclocking, DFI has developed a reputation as the very best there is, even the budget minded DFI NF4 Infinity boards are crazy overclockers. The DFI RDX200 CF-DR should have no problem living up to the hype with easily the most complete BIOS I have ever seen combined with the quality construction of the board itself.

Starting out with my AMD Athlon 64 3800+ at its default multiplier of x10 I was able to push the board  to an impressive 268FSB, a touch less than the 270FSB I reached with the DFI NF4 SLI-DR awhile back. 

Default Multiplier

Dropping the memory divider to 166 and the CPU multiplier to x8 allowed me to push the board all the way to 309FSB, not too shabby at all. One issue I'd like to point out is the heat generated by the chipsets. Once I got past 300FSB the ATI Radeon Xpress 200 NB chipset was idling at 49C and peaked at 58C during my testing.

Max O/C

Another point worth mentioning is that the RDX200 CF-DR is still in its infancy. While both NF4 board used for comparison have had several BIOS optimizations to improve performance, the RDX200 CF-DR has had exactly ONE beta BIOS release. I expect even better performance once all the kinks are removed. 

Final Thoughts

DFI RDX200 CF-DR

Final Thoughts

A year ago, when DFI released the NF4 LANParty Series, there were a lot of small issues -- mostly BIOS issues that pop up with any release. It didn't take DFI long to sort them out, and now those boards are without a doubt the motherboard of choice for anyone serious about overclocking. I see the RDX200 CF-DR in much the same light. This board has so much potential, yet a few flaws could end up dooming it. One issue I think does reflect badly on DFI is the USB support issue that causes the system to hang when booting.  Although there is a work around (disable USB Mouse and Keyboard support in the BIOS) and I'm sure a fix in the near future.... it should have been fixed before the product was released to consumers. DFI is not alone in doing this as several companies have released products with quirks.

On a related note, the usage of ATI SB450 southbridge chipset surprised me, considering the general consensus that the chip is a chronic poor performer. While on one hand this is a small issue in that the USB transfer rates are quite a bit slower, that isn't my big complaint here. With the move to SATA 2.5, how can a board with so much right go so wrong? The RDX200 CF-DR's failure to support such features as NCQ (Native Command Queuing) and 3.0GB/s transfer really won't affect you now..... but what about 4-6 months down the road when SATA 2.5 features really take root? 

As far as my recommendation I am completely torn here. I have been a big DFI fan for almost two year, dating back to the i875 Rev B boards. I've seen DFI boards start out with issues, then a short time later shake whatever bug they had and turn out to be an outstanding choice. With a BIOS deeper than their NF4 boards and excellent overclocking potential, the RDX200 CF-DR COULD BE a damn fine board. When it came to the layout I had an issue with the DIMM slot configuration, but that was offset by the fact most CPU Coolers will provide enough cooling that it won't cause problems. I was also happy to see the PCI-E x16 slots spaced far enough apart to satisfy any cooling solution on the video cards. Lastly, I sincerely appreciate DFI doing away with the jumper setup they used with their NF4 boards. I know was not the only one who hated changing those things back and forth!

As far as performance I felt the RDX200 CF-DR was up to the challenge. Considering the handicap placed on it with the X850 Crossfire setup, it performed admirably. I feel that once ATI releases their X1800XT Crossfire Edition cards we'll really see a battle between ATI and NVidia for top dog of the graphics solutions. When it came to overclocking, the RDX200 CF-DR was outstanding, but what else would you expect from DFI?

DFI RDX200 bundle

The Legit Bottom Line

There is so much to love about this board. With a better developed BIOS over that of their NF4 boards and excellent overclocking potential, the RDX200 CF-DR is better than some companies flagship motherboards. While the board has its strong points it also has several flaws that are of concern. The RDX200 is simply a very good board, while the DFI NF4 LANParty SLI board is still the great board.