Asus A8N32-SLI Deluxe: NVIDIA Dual x16 for the Athlon 64
by Wesley Fink on November 6, 2005 9:00 AM EST- Posted in
- Motherboards
Test Setup
*Samsung TCCD from OCZ and other Memory manufacturers is currently binned into several speed grades. Our test memory would be equivalent to current OCZ PC4800.
Tests used OCZ PC3200 Platinum Rev. 2 (current equivalent OCZ PC4800) which uses Samsung TCCD chips. All memory ran at 2-2-2-7 timing in all benchmarks.
We tested the Asus A8N32-SLI using both single and SLI MSI NVIDIA 7800GTX with NVIDIA video driver 81.85. Once we discovered the improved performance, we also ran a full retest of graphics and gaming benchmarks on the DFI LANParty nF4 SLI-DR for comparison. Resolutions in standard benchmarks were 1280x1024x32 unless otherwise noted. Some standard tests like 3DMarks and Aquamark set standard tests automatically to 1024x768 to force a consistent comparison. Gaming benchmarks were run at 1600x1200 with 4x Anti-Aliasing and 8x Anisotropic Filtering enabled wherever possible. SLI game benchmarks were also run with 4xAA and 8xAF where possible.
Results for the Asus A8N32-SLI are in red, while results for the retest of the DFI LANParty nF4 SLI-DR are color-coded orange. Results for the other boards are in blue. Other board tests used the 6800 Ultra for testing unless otherwise noted and are included for reference.
We added Quake 4, F.E.A.R., and Splinter Cell - Chaos Theory to game benchmarks in this review. Asus targets the A8N32-SLI at the gamer, and these recent games should provide a better picture of the Asus performance in the latest games. We will be adding Battlefield 2 and Call of Duty 2 benchmarks in future reviews. The benchmarks that we have been testing for these two games are not completely reliable for both single-video and SLI testing, so they were not usable in a review that compares SLI performance. As we find solutions to these issues, we will benchmark with these new games.
| Performance Test Configuration | |
| Processor(s): | AMD Athlon 64 4000+ (2.4GHz) Socket 939 |
| RAM: | 2 x 512MB OCZ PC3200 Platinum Rev. 2* (Equivalent to current OCZ OC4800) |
| Hard Drive(s): | Seagate 120GB 7200 RPM SATA (8MB Buffer) |
| Video AGP & IDE Bus Master Drivers: | NVIDIA 6.82 Platform NVIDIA 6.70/6.66 Platform ATI Catalyst Platform 5.10 |
| Video Cards: | MSI NVIDIA 7800GTX NVIDIA 6800 Ultra ATI X850XT Crossfire |
| Video Drivers: | NVIDIA 81.85 Release ATI Catalyst 5.10 NVIDIA nForce 78.01 |
| Operating System(s): | Windows XP Professional SP2 Direct X 9.0c |
| Motherboards: | Asus A8N32-SLI Deluxe DFI LANParty UT RDX200 (ATI RD480) ATI Crossfire AMD Reference Board SiS 756 Reference Board ASRock 939Dual-SATA2 (ULi M1695/1567) Sapphire A9RX480 (ATI) Jetway 939GT4-SLI-G (nForce4) ULi AP9567A (M1695/M1567) DFI LANParty nF4 SLI-DR (nForce4) DFI LANParty UT nF4 Ultra-D (nForce4) MSI K8N Neo4/SLI Platinum (nForce4) |
Tests used OCZ PC3200 Platinum Rev. 2 (current equivalent OCZ PC4800) which uses Samsung TCCD chips. All memory ran at 2-2-2-7 timing in all benchmarks.
We tested the Asus A8N32-SLI using both single and SLI MSI NVIDIA 7800GTX with NVIDIA video driver 81.85. Once we discovered the improved performance, we also ran a full retest of graphics and gaming benchmarks on the DFI LANParty nF4 SLI-DR for comparison. Resolutions in standard benchmarks were 1280x1024x32 unless otherwise noted. Some standard tests like 3DMarks and Aquamark set standard tests automatically to 1024x768 to force a consistent comparison. Gaming benchmarks were run at 1600x1200 with 4x Anti-Aliasing and 8x Anisotropic Filtering enabled wherever possible. SLI game benchmarks were also run with 4xAA and 8xAF where possible.
Results for the Asus A8N32-SLI are in red, while results for the retest of the DFI LANParty nF4 SLI-DR are color-coded orange. Results for the other boards are in blue. Other board tests used the 6800 Ultra for testing unless otherwise noted and are included for reference.
We added Quake 4, F.E.A.R., and Splinter Cell - Chaos Theory to game benchmarks in this review. Asus targets the A8N32-SLI at the gamer, and these recent games should provide a better picture of the Asus performance in the latest games. We will be adding Battlefield 2 and Call of Duty 2 benchmarks in future reviews. The benchmarks that we have been testing for these two games are not completely reliable for both single-video and SLI testing, so they were not usable in a review that compares SLI performance. As we find solutions to these issues, we will benchmark with these new games.
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Per Hansson - Sunday, November 6, 2005 - link
Hi, what type of capacitors did Asus choose to use on this mainboard?It looks like all caps are of the same type, (bar the CPU filter caps) is it Chemicon perhaps?
Klaasman - Sunday, November 6, 2005 - link
You guys at Anandtech should try cleaning the dust out of your HSF once in a while.Wesley Fink - Sunday, November 6, 2005 - link
We have received a number of emails questioning our results since some other sites who found twice the performance with Dual x16 tested with the nVidia SLI-AA option enabled with Coolbits in very recent nVidia drivers.We have complete results of SLI-AA testing with Far Cry - Regulator, the same game tested by sites claiming the 50% performance gain for Dual x16, but we no increase at all in SLI-AA performance.
ALL components except the motherboard are the same. We even moved the hard drive between the systems to make SURE everything but the motherboard remained the same. Results were the Average of two runs with the very latest 81.87 videodrivers. Memory was 2x512MB of our standard OCZ PC3200 Platinum Rev. 2 at 2-2-2-7. Memory and CPU were exactly the same in both systems, and the same MSI 7800GTX cards were used for benchmarking.
nVidia SLI-AA Mode - Far Cry - Regulator Demo - 1600x1200
8X SLI-AA 16X SLI-AA
Asus A8N32-SLI Deluxe 37.22 20.59
DFI LANParty nF4 37.89 22.19
As you clearly see, there is NO difference with nVidia SLI-AA between Dual x8 and Dual x16. In fact the Dual x8 scores are slightly faster, but they are well within error margin and I would call them equivalent - the same.
Live - Sunday, November 6, 2005 - link
Nice to see this one cleard up. To bad you where right and they where wrong, performance wise that is.mctmcpoop - Saturday, November 5, 2005 - link
Cound you re-test and compare the result from different X16 bus in A8N32 ? If the X16 slot result from the NF4 chipset is lower compare to X16 from C51D , we can be sure that the C51D X16 is much faster than NF4 chipsetWesley Fink - Saturday, November 5, 2005 - link
This is a really good idea. The only problem is the Micro ATX boards that have this North Bridge do not normally have the memory timing options and other tweaks to allow a direct comparison. Also with an enabled integrated video on the C51 north bridge we are introducing a new variable. We will probably have to wait for other Dual x16 boards to see if we can duplicate these results on the newest, most demanding games.mctmcpoop - Saturday, November 5, 2005 - link
What I mean is test both of the X16 slot on A8N32 , one X16 bus should be from C51D pci express tunnel chip , the other X16 slot bus should be from the NF4 chip as other normal SLI board ... So if the right X16 slot get good score compare to left X16 slot , that means C51D chip has better design of the pci express x16 bus ...Wesley Fink - Sunday, November 6, 2005 - link
I ran some quick tests comparing the North x16 slot (nearest to CPU) and the South x16 slot on the Asus in the 3 new games that showed the big single-video increases. The South x16 slot was consistently slower than the one nearest the CPU by 2% to 6.7% in our single video performance tests. Perhaps there are difference in performance of the MCP51 and nF4 SLI which each drive one of these slots. We will look at these results again in future Dual x16 board reviews.lopri - Saturday, November 5, 2005 - link
Another question for Wesley:When you say OC isn't as good with SLI as with a single video card setup, is it in general? Or this particular board? Also, what's the reason for it? CPU? Chipset? Power regulation on the board?
Thanks again for a great review! I'm eagerly waiting for this board!
Wesley Fink - Saturday, November 5, 2005 - link
We have noticed that SLI will not overclock as high on other nForce4 boards as well, but I can't tell you the max on each one for SLI. I made this comment because I couldn't duplicate an overclock I had run earlier on this board, realized I had SLI set-up, removed the 2nd card and ran a few quick tests to see the impact of SLI on maximum overclock.