nForce4 SLI Roundup: Painful and Rewarding
by Wesley Fink on February 28, 2005 7:00 AM EST- Posted in
- Motherboards
DFI LANParty nF4 SLI-DR: Overclocking and Stress Testing
Overclocking
| Front Side Bus Overclocking Testbed | |
| DFI LANParty nF4 SLI-DR | |
| Processor: | Athlon 64 4000+ (2.4GHz, 1MB Cache) |
| CPU Voltage: | 1.55V (default 1.50V) |
| Cooling: | Thermaltake Silent Boost K8 Heat sink/Fan |
| Power Supply: | OCZ Power Stream 520W |
| Memory: | OOCZ PC3200 EL Platinum Rev. 2 (Samsung TCCD Memory Chips) |
| Hard Drive: | Seagate 120GB 7200RPM SATA 8MB Cache |
| Maximum OC: (Standard Ratio) |
238x12 (Auto HT, 2-3-2-7, 1T, 2.9V) 2856MHz (+19%) |
| Maximum FSB: (Lower Ratio) |
318x9 (2862MHz) (Auto HT, 2.5-4-3-7, 2.9V) (1:1 Memory, 1T, 2 DIMMs in DC mode) (+59% Bus Overclock) |
The DFI nForce4 boards set new records with this CPU and memory - reaching the highest overclocks at stock speed and at a lower mulitiplier that we have ever tested with this combination. We reached a very satisfying 318 (DDR636) at 1T, at the rather aggressive memory timings of 2.5-4-3-7 with our standard OCZ PC3200 Platinum Rev.2, which is based on Samsung TCCD chips.
As we detailed in our DFI review, DDR636 translated into a Quake 3 ran at 642FPS and SiSoft Sandra 2004 standard memory bandwidth was 8,300 MB/s. The Sandra unbuffered memory bandwidth was at 4000 MB/s. All these results are new performance records in our memory testing. The very wide range of memory voltages to 4.0V is particularly useful in reaching the highest possible overclocks, along with a very complete set of memory tweaking options in the BIOS. There is still a huge reserve in the available memory voltage range as we only needed 2.9V to reach these performance levels. Those with exotic cooling will appreciate that the CPU voltage and memory voltage settings on the DFI will give them what they need to squeeze every bit of performance from their CPU and memory.
Memory Stress Tests
Our memory stress test measures the ability of the DFI to operate at its officially supported memory frequency (400MHz DDR), at the lowest memory timings that OCZ PC3200 Platinum Rev. 2 modules will support. All DIMMs used for stress testing were 512MB double-sided (or double-bank) memory. To make sure memory performed properly in Dual-Channel mode, memory was only tested using either one dual-channel (2 DIMMs) or 2 dual-channels (4 DIMMs).| Stable DDR400 Timings - One Dual-Channel (2/4 DIMMs populated) |
|
| Clock Speed: | 200MHz |
| CAS Latency: | 2.0 |
| RAS to CAS Delay: | 2T |
| RAS Precharge: | 7T |
| Precharge Delay: | 2T |
| Command Rate: | 1T |
Using two DIMMs in Dual-Channel 128-bit mode, the memory performed in all benchmarks at the fastest 2-2-2-7 timings at default 2.6V voltage.
Tests with 4 DS DIMMs on an AMD Athlon 64 system are more demanding, since AMD specifies DDR333 for this combination. However, most AMD Athlon 64 motherboards combined with recent AMD processors (the memory controller is on the AMD CPU) have been able to handle 4 DIMMs at DDR400.
| Stable DDR400 Timings - 4 DIMMs (4/4 DIMMs populated) |
|
| Clock Speed: | 200MHz |
| CAS Latency: | 2.0 |
| RAS to CAS Delay: | 2T |
| RAS Precharge: | 7T |
| Precharge Delay: | 2T |
| Command Rate: | 2T |
Tests with all four DIMM slots populated on the DFI nForce4 boards required a 2T Command Rate with 4 DS DIMMs in two dual channels. This is the pattern seen on other top-performing Socket 939 boards, but we hoped higher voltage might allow us to eek out 4 DS DIMM 1T performance. However, additional voltage did not help and DDR400 with 4 DS DIMMs still required a 2T Command Rate on the DFI nForce4 boards.
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Heinrich - Monday, February 28, 2005 - link
Hi, this is a great article. I'm really disappointed that the issues with the new Winchesters and the MSI board were not uncovered. The new CPUs will not post past FSB of 219, which is far below the 250 many get with other boards. Someone with the depth of knowledge, experience, and understanding of all these little options in the BIOS could help us uncover the real problem. Here's the best thread devoted specifically to the problem on Rebel HQ:http://www.rhcf.com/sisubb/ultimatebb.php/topic/21...
ajmiles - Monday, February 28, 2005 - link
Hey,I enjoyed the round up of the SLI boards very much and thought it was very thorough.
I own an A8N SLI Deluxe board, and too have been thoroughly disappointed with it's overclocking performance.
On behalf of tens of users on the Anandtech - Motherboards forums, would it be beyond Anandtech's power to get a statement from Asus about the issue???
At a 2T Command Rate the board will overclock to 316, 1T however just 249. The sudden BSODing as you approach 250 smacks of something that could be fixed with a BIOS update.
Please Anandtech, A8N users are begging for this to be fixed, or at least be told it can't be.
Many thanks, and again, a great article.
Adam Miles
Viper4185 - Monday, February 28, 2005 - link
is it true that the MSI board doesnt have a PCI Express x1 slot so that when the new Creative PCI express sound cards come out it wont fit?Viper4185 - Monday, February 28, 2005 - link
Thanks for the review guys, just what I wanted! Although I am interested in the Ultra versions its still very similar...I was wondring if you could comment on the stability/stress testing of the DFI board as Hardocp seems to have had some issues...
http://www.hardocp.com/article.html?art=NzE3LDc=
Also would have been good if you included the Abit Fatal1ty board to make the review 100% conclusive for me.
nzimmers - Monday, February 28, 2005 - link
dang, I wasn't first, oh well.one more thing....I no longer chase the FPS demon, and I am better for it (mentally and emotionally). To be honest I don't expect SLI to become a standard in MB design.....even for high end gamers. Isn't the price just too high?
nzimmers - Monday, February 28, 2005 - link
First post!I was actually really (plesantly) surprised that DFI did so well. I know that they have been improving lately but isn't it great to see another MB manufacturer improving for once?
arfan - Monday, February 28, 2005 - link
finally...., thx 4 your reviewjkv71 - Saturday, June 3, 2017 - link
My DFI video quit. I use an adapter to run hdmi on my tv. I replaced the video card and still nothing. I replaced the mother board. Still nothing. Any ideas?