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
Final Words
It's a shame that the first task in reviewing the truly excellent Asus A8N32-SLI Deluxe is to set the record straight. Despite what you may have seen at other web sites, we can tell you conclusively that the Asus A8N32-SLI is not 40% to 50% faster in some games than the current Dual x8 designs. Those who concluded this overlooked the impact of the new 81.85 NVIDIA drivers and 6.82 platform drivers on the board's performance. These new drivers are definitely faster - so much so that current NVIDIA owners should definitely upgrade their video drivers.
We truly expected no increase in performance at all with the new Asus Dual x16 once the playing field was leveled. What we actually found, however, was that the A8N32-SLI Deluxe is slightly faster in both single video and SLI running our current test suite games like Doom 3, Far Cry, and Aquamark 3. The A8N32-SLI is faster, but at levels that are generally within the margin of error.
There is more to the story though. While we can't fully explain why it is faster, we did find the Asus A8N32-SLI Deluxe to be as much as 8% faster on the newest games that we tested in SLI mode, and up to a whopping 17% faster in single video mode with single/dual 7800GTX video cards. These are significant increases in performance that can't be ignored. We don't know why this is the case, and we will be testing this further as more Dual x16 boards appear in the marketplace. Perhaps it is the Asus design, perhaps it is the MCP51, and perhaps it could be anything.
Please do not let the debunking of the 40% to 50% claims that others have made for this board's performance sway your opinion of the Asus A8N32-SLI. This is one fast Socket 939 motherboard worthy of a place in any enthusiast's Athlon 64 system. The 8-phase works very well to keep the board stable and cool, the heat pipes and no fans really work, and Asus even provides optional cooling fans for those who will use water cooling with this board. If you want to build a super performance, silent PC or a water-cooled or phase-change cooled super overclocker, the A8N32-SLI will serve you well. We couldn't say anything close to this about recent Asus boards, but Asus obviously designed this board to turn some heads in the Athlon 64 market.
The Asus A8N32-SLI is also a monster overclocker, reaching the highest overclock ever with our stock CPU and to 310FSB with a reduced multiplier. If you compare this performance to our other reviews of recent Asus Socket 939 boards, you may wonder if they were produced by the same company. Asus has become serious about Athlon 64, and it shows in the design, execution and performance of the A8N32-SLI Deluxe.
The A8N32-SLI is blessed with a unique and very effective design that truly works. The 8-phase design behaves gracefully under extreme loads and remains much cooler than other 3- or 4-phase designs. This yields excellent stability and headroom that we have not seen before on an Asus Socket 939 design. Asus claims that the board is up to 15°C (36°F) cooler than conventional solutions, and we saw nothing in our testing to make us doubt this claim. The board remained cool and stable under the most difficult test conditions.
In the end, we still have some reservations as to whether Dual x16 makes any difference at all in video performance. It certainly appears to improve performance greatly in the latest, greatest, and most demanding games, but we will need to dismiss other potential explanations before we become a true believer. We do not, however, have reservations about the A8N32-SLI Deluxe. This board is a definite keeper.
It's a shame that the first task in reviewing the truly excellent Asus A8N32-SLI Deluxe is to set the record straight. Despite what you may have seen at other web sites, we can tell you conclusively that the Asus A8N32-SLI is not 40% to 50% faster in some games than the current Dual x8 designs. Those who concluded this overlooked the impact of the new 81.85 NVIDIA drivers and 6.82 platform drivers on the board's performance. These new drivers are definitely faster - so much so that current NVIDIA owners should definitely upgrade their video drivers.
We truly expected no increase in performance at all with the new Asus Dual x16 once the playing field was leveled. What we actually found, however, was that the A8N32-SLI Deluxe is slightly faster in both single video and SLI running our current test suite games like Doom 3, Far Cry, and Aquamark 3. The A8N32-SLI is faster, but at levels that are generally within the margin of error.
There is more to the story though. While we can't fully explain why it is faster, we did find the Asus A8N32-SLI Deluxe to be as much as 8% faster on the newest games that we tested in SLI mode, and up to a whopping 17% faster in single video mode with single/dual 7800GTX video cards. These are significant increases in performance that can't be ignored. We don't know why this is the case, and we will be testing this further as more Dual x16 boards appear in the marketplace. Perhaps it is the Asus design, perhaps it is the MCP51, and perhaps it could be anything.
Please do not let the debunking of the 40% to 50% claims that others have made for this board's performance sway your opinion of the Asus A8N32-SLI. This is one fast Socket 939 motherboard worthy of a place in any enthusiast's Athlon 64 system. The 8-phase works very well to keep the board stable and cool, the heat pipes and no fans really work, and Asus even provides optional cooling fans for those who will use water cooling with this board. If you want to build a super performance, silent PC or a water-cooled or phase-change cooled super overclocker, the A8N32-SLI will serve you well. We couldn't say anything close to this about recent Asus boards, but Asus obviously designed this board to turn some heads in the Athlon 64 market.
The Asus A8N32-SLI is also a monster overclocker, reaching the highest overclock ever with our stock CPU and to 310FSB with a reduced multiplier. If you compare this performance to our other reviews of recent Asus Socket 939 boards, you may wonder if they were produced by the same company. Asus has become serious about Athlon 64, and it shows in the design, execution and performance of the A8N32-SLI Deluxe.
The A8N32-SLI is blessed with a unique and very effective design that truly works. The 8-phase design behaves gracefully under extreme loads and remains much cooler than other 3- or 4-phase designs. This yields excellent stability and headroom that we have not seen before on an Asus Socket 939 design. Asus claims that the board is up to 15°C (36°F) cooler than conventional solutions, and we saw nothing in our testing to make us doubt this claim. The board remained cool and stable under the most difficult test conditions.
In the end, we still have some reservations as to whether Dual x16 makes any difference at all in video performance. It certainly appears to improve performance greatly in the latest, greatest, and most demanding games, but we will need to dismiss other potential explanations before we become a true believer. We do not, however, have reservations about the A8N32-SLI Deluxe. This board is a definite keeper.
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Wesley Fink - Friday, November 4, 2005 - link
I can't help on the Lian-Li question as I don't have a similar setup, but I am familiar with the upside-down mounting some top-end cases are providing. Our test setup runs the board flat, without the advantage of "heat-rising" and we had no issues. It's a good question for Asus engineering or the Forums.As for the slots, check my comments above. With 2 single slot 7800GTX we could still mount 3 PCI and an x4 PCIe - though 2 of the PCI will block video fan exhaust if they are too tall. With double-slot (and worst case) one PCI is usable and one x4 PCIe.
lopri - Friday, November 4, 2005 - link
Wesley,Could you please comment on the heatpipe's efficiency for this board? This is a real concern for people with Lian-Li V1000, or any case that houses the motherboard upside-down. I had a problem with A8N-SLI Premium board's heatpipe in my case, and I really, really want to know.
Thank you very much. This review is fantastic.
lop
dunce - Friday, November 4, 2005 - link
What about using this board in a reverse ATX case? Like that Antec P180 or Silverstone TJ06? This a new trend in ATX cases to improve video card and CPU cooling by flipping the ATX mother board upside down. From what I know about heatpipe cooling the water boils, heat rises with the gases and cools at the “radiator fins” . Right? On this Asus board in a “normal” ATX case this would work great but in a reverse ATX the radiator fins will be at the bottom of the heat pipe exchange and rendered ineffective. Correct?Paul
Live - Friday, November 4, 2005 - link
Antec P180 does not flip the Motherboard. It places the PSU in a separate chamber below the board. The orientation of the board is still standard tough.For cases that does put the motherboard upside down the effectiveness of the heat pipes are decreased.
Aquila76 - Friday, November 4, 2005 - link
That's what happened with the A8N-SLI Premium in 'BTX mount' cases like the Lian-Li, etc., I'm sure it happens on this board as well.deeltje - Friday, November 4, 2005 - link
In the new cases it won't work, well, it works but the chipsets get insainly HOT!I ordered the V1000 but changed to the PC6070B Plus very quick :)
BTW, any USA shops that has this board in stock and ship abroad???? Anyone???
trooper11 - Friday, November 4, 2005 - link
One thing that has been bugging me about this board is the pci-e/pci layout. I was suprised you guys didnt cover that when you talked about the layout of the board.I do want to use SLI on this, but I have to be able to use all 3 pci slots and the single pci-e x4 slot all at the same. now the video card i was going to start with is the EVGA 7800GTX KO with the sheathed cooler. now the way the layout looks to me, that would be impossible.
Did anyone check if the other slots are still useable when using SLI?
Wesley Fink - Friday, November 4, 2005 - link
Our test rig uses two MSI 7800GTX in SLI mode. They are single slot cards. I was able to install 3 PCI network cards and a PCIe network card in the x4 PCIe slot. They would all fit, but the cards closest to the 7800GTX cards do mostly block the fans on the video cards. With double-slot video cards one PCI and the x4 PCIe would be all that are usable for expansion.Asus will be introducing a single-slot dual-GPU 7800 card in the near future, but that might mean SLI in a single x16 slot which is bakc to dual x8. We do know the Gigabyte 3D1 dual-GPU cards work on the Asus, DFI, and Gigabyte SLI boards - all 3 have the BIOS hooks to drive a single-slot dual-GPU.
deeltje - Friday, November 4, 2005 - link
I've been waiting for this board for over 2 weeks now and it still isn't available anywhere in europe.So i would love to get this board shipped from USA to The Netherlands (where i live).
Does anyone know a good USA Computershop that has these boards in stock and accept Mastercard payments!?!?!?!?
I don't care about the shippingcosts, as long as they can ship FAST :)
Zebo - Friday, November 4, 2005 - link
with single card - your chart says DFI is 8x1 - and performance seems to bear that out. OTOH, in narrative below that chart, you say both are running 16x1 and DFI still takes a whoopin.