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  Asus A8N-SLI Deluxe FAQ 
 
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Leo Lambert Feb 01, 2005, 07:12pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Just a quick question on the EPS12V, i'm running 2 x 6800GT's in SLI, is it nessecary to convert the 8 pin connector to 6 pin PCI-e connector, or can i just use the Molex to PCI-E adapters that came with the 6800GT's ?

Full specs are

A8N-SLI
2x6800GT's
1GB Corsair TwinX-XL Pro ram
A64 4000+
2 x 74GB Raptors

Cheers!

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Roger Webster Feb 01, 2005, 10:47pm EST Reply - Quote - Report Abuse
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>> Not all 6800 GTs Created Equal -- a Warning
I have two Asus 6800 GTs, which were shown on the Newegg site as "supporting SLI"

What this appears to mean is that yes, you can run them in SLI mode (they have the bridge connections), but no, you are not going to be happy with the results. It turns out there are "SLI Certified" video cards, and the Asus 6800 GT is NOT on that list. I get horrible display corruption (and this turns out to be a common problem after experiencing it and searching for it) in Half-Life 2 and Far Cry.

Sigh. Back they go, and next I'll get a brace o' cards on the Official NVidia Certified SLI List. Doh.

Greg M Feb 01, 2005, 11:20pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
A quick comment Sander:
A 420 Watt Aspire PSU runs my setup... and I tried it with SLi... it worked in safe mode, but because of my haing installed 1 card before the other, I couldnt run any games as I got a BSOD on boot.

FX-55
1GB (2x512) Corsair XMS
6800GT
2x80GB Segate 7200 RPM SATA Barracudas
3x80MM case fans
1x120 MM LED fan
Cold Cathode light
DVD-ROM
DVD-Burner

I have not yet tried coping a DVD while playing a game to test full on stability, but I have installed games while playing another, and it works fine.... Just some info on the power needs.

You should add to people that they need to uninstall all video drivers before installing the cards. Dont let them do what I did: Install one card, then install the other later without un-installing drivers. As stated, it produces a BSOD.

----
FX-55, 2x 1GB GSkill, X1800XT (512MB), 2x250GB RAID-0, DFI SLI-D
http://www.gandmpc.com <-My 'project'
http://www.knownpsycho.com <-Web games!
Sander Sassen Feb 02, 2005, 02:17am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
> Did someone test the Enhance Invasion 460W psu?
(Winni-3500, 2x6600GT)

No, do you have a link to the specs? As mentioned you'd need at least 18A on the 12volt rail.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Sander Sassen Feb 02, 2005, 02:21am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Jason,

> I was wondering if anyone has come across problem with the nVidia NIC just randomly dieing after X hours? I have had this happen quite frequently and the problem remains until I reboot. Switching to the other Onboard NIC seems to reduce the problem but I have still had it happen to me once.

Looks like a stability issue to me, I have not seen this on the the A8N-SLI DLX motherboards we have here and they have been running for many hours already. Have you tried re-installing with the drivers and BIOS settings mentioned in the FAQ?

> I have a new Plextor SATA DVD burner installed. I found that Windows XP SP2 (MCE) would lock up whenever I tried to access the drive forcing me to reboot. Switching to the other onboard SATA solved the problem and allows me to use the drive. Just FYI,

That's good news, but I'd stay away from Serial-Ata optical drives for now, we've seen it cause crashes, failure to boot etc. on different configurations, switching to a normal optical drive solved the problem.

> Lastly, has anyone managed to get a working system up and running using the new Windows 64b PR?

No, due to lack of drivers.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Sander Sassen Feb 02, 2005, 02:23am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Anthony,

> The odd thing is the system will boot if I take the card out of the PCIEX16_1 and put it into the PCIEX16_2.

Looks like a dead slot to me, RMA the motherboard and see whether that solves your problems. You did set the card selector to 'single video card' did you?

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Sander Sassen Feb 02, 2005, 02:25am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Jan,

> Bad news-Geil Ultra X PC-3200 (2-2-2-5) is not supported in dual channel mode.n00b question-if i update bios is there any chance to run it?

Depends on what version you run now, if it is 1001 or 1002 you might have better luck with 1003. I have yet to see modules not working with this motherboard and the 1003 BIOS. And we have quite a number of DDR400 modules here that we tested, including GEIL.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Sander Sassen Feb 02, 2005, 02:27am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
> Which case would you reccomend for this board? I want to get full use of all the ports.

I'm using a Antec SLK3700BQE simply because it has excellent cooling and airflow possibilities, with a 12-cm fan in the front and the back. Obviously you'll have to replace the power supply as that's not sufficient to run a SLI configuration.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Sander Sassen Feb 02, 2005, 02:30am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Leo,

> Just a quick question on the EPS12V, i'm running 2 x 6800GT's in SLI, is it nessecary to convert the 8 pin connector to 6 pin PCI-e connector, or can i just use the Molex to PCI-E adapters that came with the 6800GT's ?

Yes, you should be able to, just keep in mind that when you do that all the power is drawn from the first 12v power rail, which has only got about 15A. If you use the 8-pin connector and modify it the 6800s are powered off of the 2nd 12v rail, thus not sharing this with other devices but for the CPU, this adds to stability a lot and is a requirement when running two 6800 Ultras.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Sander Sassen Feb 02, 2005, 02:33am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Roger,

> I have two Asus 6800 GTs, which were shown on the Newegg site as "supporting SLI" What this appears to mean is that yes, you can run them in SLI mode (they have the bridge connections), but no, you are not going to be happy with the results. It turns out there are "SLI Certified" video cards, and the Asus 6800 GT is NOT on that list.

What you need is two cards with the same BIOS, and by the looks of it your cards have different BIOSes, you can get around this by ordering two cards from the same manuf. at the same time. Or flash the BIOS to identical versions on both cards to get around this. SLI certification is basically a guarantee that both cards have the same BIOS and work together.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Sander Sassen Feb 02, 2005, 02:35am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Roger,

> Dont let them do what I did: Install one card, then install the other later without un-installing drivers. As stated, it produces a BSOD.

We've not had that problem, but yes, to be save it can't hurt to just reinstall when you're going to use SLI. Are you sure both your cards have the same BIOS, as that could be the problem as well.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Leo Lambert Feb 02, 2005, 02:38am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
"QUOTE" Yes, you should be able to, just keep in mind that when you do that all the power is drawn from the first 12v power rail, which has only got about 15A. If you use the 8-pin connector and modify it the 6800s are powered off of the 2nd 12v rail, thus not sharing this with other devices but for the CPU, this adds to stability a lot and is a requirement when running two 6800 Ultras. "END QUOTE"

I thought the 12V Rail had 36A running through it, that's what it says on the Antec website.

http://www.antec.com/specs/true550EPS12V_spe.html

Sander Sassen Feb 02, 2005, 02:44am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Leo,

> I thought the 12V Rail had 36A running through it, that's what it says on the Antec website.

http://www.antec.com/specs/true550EPS12V_spe.html

That's with both 12v rails combined from what I understand, the idea of ATX v2.0 and EPS12V is to have seperate power rails for CPU and I/O (motherboard, video card, hd, etc). This is an Intel spec. and put in place to supply Prescott core P4s with enough power. Antec is not clear on how they implemented this, but from what we've seen it follows the ATX v2.0 spec. hence two rails with about 18A per rail.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Leo Lambert Feb 02, 2005, 02:53am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
On ASUS site it says 2 x 6800GT's requires 20A on the 12v Rail with a 400watt + PSU, what are your thoughts on this?

http://www.asus.com/products/mb/socket939/a8nsli-d/overview.htm#

The reason i ordered the Antec PSU was because i thought it had 36A, damn i hate these rating systems.

Sander Sassen Feb 02, 2005, 02:56am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Leo,

> On ASUS site it says 2 x 6800GT's requires 20A on the 12v Rail with a 400watt + PSU, what are your thoughts on this?

Stick with the PSUs I listed as we tested these to work. The Tagan TG480-U01 is a bargain in comparison to the Antec and works just fine with performance to spare.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Leo Lambert Feb 02, 2005, 03:25am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
"QUOTE"Stick with the PSUs I listed as we tested these to work. The Tagan TG480-U01 is a bargain in comparison to the Antec and works just fine with performance to spare."END QUOTE"

Yeah it was either the Antec or the Thermatlake 560watt, that's all i could find available in Aus. I went for the Antec because of the 24 pin connector and because i thought it had 36A on the one rail. The thermaltake has 22A on the 12V rail, but only had the 20-pin connector.

Thanks for all the help mate, and thanks for putting this thread together, it's been a real great help.

Cheers!

Jesper Noer Feb 02, 2005, 05:20am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Thanks for a great faq...

I have a litte funny issue to add to this thread.

I experience problems having POST displayed, as many others, however, I've found that if I don't connect my monitor, and connects my TV to the Tv-out of my Asus AEX300 card, then I always have post shown on the TV...

I'm quite surprised that the cause is a powersupply issue. Together with the board I ordered a Chill-innovation CP-510A, with output ratings:

+5V = 45A
-5V=0,5A
+12V=25A
-12V=0,8A
+3,3V=33A

Total rated watt output: 510W,
5V & 3.3V & 12V: 480W,
5V & 3.3V: 330W

I thought this was sufficient, but I'll try the Antec Neopower 480....

Anthony Heath Feb 02, 2005, 08:03am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Sander,

> The odd thing is the system will boot if I take the card out of the PCIEX16_1 and put it into the PCIEX16_2.

Looks like a dead slot to me, RMA the motherboard and see whether that solves your problems. You did set the card selector to 'single video card' did you?

Yes, it is set to Single. Asus think its the power supply, they say its on the limit for my system. Whats your thoughts?

Anthony


Roland Dreier Feb 02, 2005, 10:50am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
OK, I'm trying to do something a little different with my A8N-SLI system, so bear with me while I describe my setup. My question seems to far from "frequent" but I was told to post it to the FAQ thread, so here goes... I have the following system:

A8N-SLI mobo (obviously)
90nm Athlon64 3500+
2GB RAM (2 sets of Corsair value select dual channel 1GB kits)
160GB Seagate SATA drive (connected to Nvidia connector)
PNY 6600GT video card
Topspin PCIe 2 port 10 Gb/sec InfiniBand HCA

The 6600GT is a X16 PCI Express card and the Topspin IB HCA is a X8 PCI Express card. I have the ASUS Ez-plug thingy set up for SLI mode, the video card in the first X16 PCIe slot (nearer the CPU) and the IB card in the second X16 PCIe slot.

I have Ubuntu Linux with kernel 2.6.10 installed, and everything is working fine except that the InfiniBand card doesn't show up at all. I don't think it's a software thing, since it's not listed in lspci at all. (If I can get the card to show up at all I'm pretty sure I can make it work, since I wrote most of the code under drivers/infiniband in the Linux kernel)

As I understand things, a X8 PCIe card should work in a X16 slot but that doesn't seem to be happening for me. The SLI setting does seem to be working, because if I decode the PCIe link status register for the video card and the PCIe port it's connected to using lspci, I see that link is coming up as X8.

What's kind of weird is that if I decode the link capability register for the other 3 PCIe ports, I see a X2 port and two X1 ports (and in fact the 4th port lists a capability of X16 even though it says it's running at X8). The other weird thing is that these ports give active widths of X4, X4 and X8 even though lspci doesn't see anything downstream of them (I have an Intel system that shows active widths of X0 for PCIe ports with nothing connected, and that's what I would expect to see).

Tomorrow I'm planning on swapping the cards so that the video card is in the second slot, and also switching around the SLI setting. However I'd appreciate any advice on making this work (or an explanation on why it's impossible to do it).

Thanks!
Roland

Kevin Estes Feb 02, 2005, 02:05pm EST Reply - Quote - Report Abuse
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Edited: Feb 02, 2005, 02:17pm EST

 
>> Re: Asus A8N-SLI FAQ
I am building an A8N-SLI system and had to RMA the board to Asus because my matched pair of OCZ platinum EL rev.2 DDR400 pc3200 Ram would only post with one stick (either of the 2) in the B2 DIMM slot. Any other combinations would give a system failed memory test post message. This is frustrating and I hope my sticks are indeed a matched pair as I understand some other folks have received mixed sticks in a matched pair purchase. Anyway that is where I'm at at the moment .Waiting.....

My question is : I am using an Antec neopower 480 PSU with an AMD 3500+ 90nm cpu, with 2 BFG 6800GT OC cards. When you connected the PSU in your lab how did you connect the 2 GPU's? I plan to use the 6 pin line from the PSU connected to the primary card along with one of the 2 molex to 1 PCI-e connector adapters supplied with the cardsconnected to the secondary card. Will this work and do you have to connect 2 molex inputs into the PCI-e adapter? Any guidance would be greatly appreciated.

Asus A8N-SLI w AMD64 3500+ Winnie
2 x 512mb OCZ EL Patinum Rev. 2 DDR400 PC3200 RAM
2 74gb Raptors in Nvidia RAID 0
2 x BFG 6800GT OC
Gigabyte 3D Rocket CPU cooler
PC Power and Cooling 510 SLI PSU

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