NVIDIA 680i: The Best Core 2 Chipset?
by Gary Key & Wesley Fink on November 8, 2006 4:45 AM EST- Posted in
- CPUs
Memory Performance
The AMD AM2 has essentially removed concern about the Memory performance of chipsets by providing a low-latency memory controller directly on the processor. Intel continues to integrate the memory controller in their chipsets, and the Intel Core 2 chipsets achieve competitive memory performance and low latency with caching schemes and read-ahead algorithms. Because Intel has done such an excellent job of providing stellar memory performance in the 975x/P95 chipsets, any chipset that hopes to compete with Intel would have to perform similarly in memory controller performance.
To assess the effectiveness of the NVIDIA 680i chipset we measured memory performance with Everest 3.50 from Lavalys and compared results to the top-end Intel 975X chipset.
The results of memory performance on the NVIDIA 680i are truly impressive compared to the 975X. NVIDIA has clearly produced a competitive memory controller for Intel Socket 775, a task which has eluded other chip makers who have tried to compete on this platform. Results can only be called equivalent in any of the Everest benchmarks.
Another widely used measure of latency and memory bandwidth is ScienceMark 2.0.
ScienceMark confirms the results with Everest 3.5. NVIDIA has built a memory controller in the new 680i chipset that is every bit as good as the outstanding Intel memory controller in the 975X. This is not a minor achievement.
The final confirmation of memory controller performance with the 680i chipset comes with SiSoft Sandra 2007. The most common measurement is buffered or Standard Memory Bandwidth.
The AMD AM2 has essentially removed concern about the Memory performance of chipsets by providing a low-latency memory controller directly on the processor. Intel continues to integrate the memory controller in their chipsets, and the Intel Core 2 chipsets achieve competitive memory performance and low latency with caching schemes and read-ahead algorithms. Because Intel has done such an excellent job of providing stellar memory performance in the 975x/P95 chipsets, any chipset that hopes to compete with Intel would have to perform similarly in memory controller performance.
To assess the effectiveness of the NVIDIA 680i chipset we measured memory performance with Everest 3.50 from Lavalys and compared results to the top-end Intel 975X chipset.
| Everest 3.5 Memory Performance | ||||
| Chipset | Read | Write | Copy | Latency |
| NVIDIA 680i | 8045 | 4865 | 5506 | 54.8ns |
| Intel 975x | 7751 | 4868 | 5512 | 52.3ns |
The results of memory performance on the NVIDIA 680i are truly impressive compared to the 975X. NVIDIA has clearly produced a competitive memory controller for Intel Socket 775, a task which has eluded other chip makers who have tried to compete on this platform. Results can only be called equivalent in any of the Everest benchmarks.
Another widely used measure of latency and memory bandwidth is ScienceMark 2.0.
| ScienceMark 2.0 Memory Performance | ||
| Chipset | Latency (512 byte stride) | Memory Bandwidth |
| NVIDIA 680i | 37.12ns | 5449.37 MB/s |
| Intel 975x | 37.81ns | 5430.69 MB/s |
ScienceMark confirms the results with Everest 3.5. NVIDIA has built a memory controller in the new 680i chipset that is every bit as good as the outstanding Intel memory controller in the 975X. This is not a minor achievement.
The final confirmation of memory controller performance with the 680i chipset comes with SiSoft Sandra 2007. The most common measurement is buffered or Standard Memory Bandwidth.
| Sandra 2007 Standard Memory Performance | ||
| Chipset | INT (Integer) | FLT (Float) |
| NVIDIA 680i | 5969 | 5944 |
| Intel 975x | 5949 | 5953 |
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davidos - Wednesday, November 8, 2006 - link
Great Review... When can we expect the cheaper 650 boards?Gary Key - Friday, November 10, 2006 - link
December for 650i SLI and January for 650i Ultra.
jackylman - Wednesday, November 8, 2006 - link
Why no power consumption tests? I mean, we know the NFurnace is a power hog, but numbers would be nice.A review from another site has the NFurnace consuming about 25W more at idle than a P965. Buy one now and save on your heating oil bill!
Wesley Fink - Wednesday, November 8, 2006 - link
The upcoming 8800 review reports power consumption of the 8800 on the 680i. We figure a 680i with 8800 SLI and phyics processor should draw enough power to light San Jose :-) ALL the first DX10 video cards will likely require huge amounts of power.We will compare 975x, 965, and 680i chipset on power consumption and add it to the review later this evening.
jackylman - Wednesday, November 8, 2006 - link
Awesome, thank you!Gary Key - Sunday, November 12, 2006 - link
Hi,I decided to run the power tests with a typical high-end setup in a case. We are still working on getting down to the board level properly but these numbers should give you a good indication of the results to date.
X6800, 2GB Memory, 8800GTX, 2 Optical drives, 2 320GB Hard Drives, USB Floppy, Cooler Master Stacker 830 case with 4 120mm Fans, Tuniq 120 Cooler, SB X-FI.
Idle - Power Savings Off
680i SLI - 242W
590SLI - 236W
975X - 221W
P965 - 218W
Full Load -
680i SLI - 324W
590SLI - 331W
975X - 313W
P965 - 309W
We should have some overclocking and SLI numbers by the end of the week.
gramboh - Wednesday, November 8, 2006 - link
Been waiting for this chipset/mainboards to come out for a while, might finally be time for C2D build (with G80!)Thanks for the review.
BladeVenom - Wednesday, November 8, 2006 - link
Nice review. Any idea as to when these should start to shop up at retailers?Wesley Fink - Wednesday, November 8, 2006 - link
The EVGA boards are supposed to go on sale today. We have reports they were on the shelves at Frys last night.nVidia says partner boards will be available beginning today, and ODM boards should start appearing in early December.
hubajube - Wednesday, November 8, 2006 - link
They're on sale at Newegg right now. $270.