nForce4 SLI Roundup: Painful and Rewarding
by Wesley Fink on February 28, 2005 7:00 AM EST- Posted in
- Motherboards
Gigabyte K8NXP-SLI: Overclocking and Stress Testing
FSB Overclocking Results
| Front Side Bus Overclocking Testbed | |
| Gigabyte K8NXP-SLI | |
| 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: | OCZ PC3200 EL Platinum Rev. 2 (Samsung TCCD Memory Chips) |
| Hard Drive: | Seagate 120GB 7200RPM SATA 8MB Cache |
| Maximum OC: (Standard Ratio) |
230x12 (4X HT, 2.5-3-2-7, 1T, 2.8V) 2760MHz (+15%) |
| Maximum FSB: (Lower Ratio) |
230x12 (2760MHz) (4X HT, 2.5-3-2-7, 2.8V) (1:1 Memory, 1T, 2 DIMMs in DC mode) (+15% Bus Overclock) |
After the excellent overclocking results that we found in our pre-production review of the K8NXP-SLI, we really expected the Gigabyte SLI to be near the top of our overclocking charts. However, something has happened along the way from pre-production to production because our production board could only reach a very disappointing 230 CPU speed regardless of the multiplier selected. This is in stark contrast to the 284 that we easily reached on the pre-production board.
We recently met with Gigabyte to discuss this issue and Gigabyte has assured us that they will make updates to get overclocking back to the levels which we saw in our earlier review. For now, we can only say that we have no idea what you will actually find in the overclocking capabilities of a K8NXP-SLI that you might buy. It could be stellar, like the pre-production board that we tested, or mediocre, like the last board that we tested. We have evidence to support either conclusion.
Memory Stress Test Results:
Our memory stress tests measure the ability of the K8NXP-SLI 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 that 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 2.6 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 Gigabyte required a 2T Command Rate with 4 DIMMs in two dual channels. This is the pattern seen on other top-performing Socket 939 boards. There was no problem running 4 DS DIMMs at DDR400 at the same aggressive 2-2-2-7 settings, which worked well with 2 DIMMs.
Facebook
Twitter
RSS
108 Comments
View All Comments
chucky2 - Monday, February 28, 2005 - link
Typo on Page 20: I don't think you hit F3, it's F6.Chuck
ajmiles - Monday, February 28, 2005 - link
Wesley, would it be possible to get a reply to the comment #6 i wrote? ASUS worked closely with you to resolve the dual 6800 ultra issue, but they just stonewall me and everyone else regarding the overclocking at 1T issue.Perhaps if someone with some "muscle" in the hardware reviewing world were to push them for a response you could get one out of them?
Thanks, Adam Miles
teng029 - Monday, February 28, 2005 - link
#52 - i don't envy what you have to go through. i've had the misfortune of trying to get tech support from asus sometime ago and it was like pulling teeth.#29 - i agree. while i would love to have two 6800 ultras or GTs in SLI, the fact of the matter is i can't justify the cost. so instead i'm going with two 6600GTs. although this is apparently not a very popular choice, the fact remains that this configuration is still going to be substantially faster than my current setup using a 9700 pro and it costs about the same as my 9700 pro when i bought it.
teng029 - Monday, February 28, 2005 - link
giz02 - Monday, February 28, 2005 - link
I just noticed that the MSI board lacks additional PCIe boards, where the DFI board has an additional 1x and 4x slot. Anyones opinion on the importance of this?roostercrows - Monday, February 28, 2005 - link
I just have to mention to my fellow anandtech members that I have an ASUS A8N-SLI board and I have been trying to get through to their "tech support" Friday and all Monday morning with absolutely no luck whatsoever! You can't even get through to anyone. So, when considering a motherboard keep this in mind. My experience with their "tech support" has been the worst you can imagine. Well...at least they weren't rude or incompetent.... they just aren't there.drewski - Monday, February 28, 2005 - link
too bad the non-sli from MSI doesn't use the SB audiohttp://www.msi.com.tw/program/products/mainboard/m...
giz02 - Monday, February 28, 2005 - link
Sorry page 5-11giz02 - Monday, February 28, 2005 - link
Heinrich,Did you configure the settings as per page 5-12 in the manual to passthrough on the decoder?
THILE - Monday, February 28, 2005 - link
How did you make the Gigabyte run 4x dimms at 200mhz?I have this new motherboard GA-K8NXP-SLI and 4x of kingston hyperx pc3200 (KHX3200UlK2).
And running a new AMD athlon64 3500+ 90nm
I use SPD settings for the memmory. T2 is enabled.
Do I then force 200 mhz it just frezes.