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(SOLVED)SLI problem (card bios related?)

post #1 of 14
Thread Starter 
Ok I have been having some issues with my SLI setup and I think I finally found why. Both are the exact same EVGA 8800gts 512 cards but one showed up as NVIDIA as the manufacturer and they have different bios revision dates. The one I just got has a date of 2/13/08 and rev 62.92.3A.00.08 and the one I already had has a date of 12/03/07 and rev 62.92.16.00.02. The question is, should I flash the same bios to both of them (meaning copy the more recent bios to the one with the older)? I already fixed the issue of the one being labeled as "nvidia" branded.

More details in post #6
Edited by xtascox - 12/20/08 at 8:29am
post #2 of 14
No, in all reality, you should be able to pop in two cards from two completely different manufacturers and have no problem what so ever.
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post #3 of 14
Thread Starter 
Quote:
Originally Posted by joemaniaci View Post
No, in all reality, you should be able to pop in two cards from two completely different manufacturers and have no problem what so ever.
Yea that's what I've read. Shouldn't I also be able to have one card in, install the drivers, and then since the other card is the exact same card, I should be able to swap them, boot up, and windows shouldn't try to install drivers correct? Because I did this and when I swapped cards, it made me install drivers.

That was before the I made the manufacturer ID's match. I haven't tried since I fixed that issue.
post #4 of 14
Yes, the different Bios should not cause any issues. Imagine if that was the case, you'd have people clamouring at the vendors' doors since a lot of people would not even know anything about card Bios let alone about the notion of flashing a Bios.

Your problem extends from something else. Put both cards in, install drivers and then go to the NVIDIA Control Center and enable SLI. Do not install drivers with only one card in. Put them both in and insert the SLI bridge then install the drivers. Do not let Windows install its own drivers.
Edited by Gunderman456 - 12/19/08 at 5:35pm
 
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post #5 of 14
Thread Starter 
Quote:
Originally Posted by Gunderman456 View Post
Yes, the different Bios should not cause any issues. Imagine if that was the case, you'd have people clamouring at the vendors' doors since a lot of people would not even know anything about card Bios let alone about the notion of flashing a Bios.

Your problem extends from something else. Put both cards in, install drivers and then go to the NVIDIA Control Center and enable SLI. Do not install drivers with only one card in. Put them both in and insert the SLI bridge then install the drivers. Do not let Windows install its own drivers.
That's what I've been doing

The only time I've been installing with one card in is when I'm testing each card individually.

The lock-ups happen almost instantly in DiRT as soon as it loads into a race. With Crysis it sometimes takes a while for it to happen. I ran a loop of 10 with the Crysis benchmark and had no problems. But other times, I'd play for 1 minute or run 2 loops and get a lockup. I'm starting to think this may be a motherboard issue?
post #6 of 14
Thread Starter 
I'll describe the issue in more detail.

If I run SLI with the card with the newer bios in the 2nd slot and the older bios in the top slot, I get horrible flickering in games, benchmarks, etc. If I flip the cards (older bios in 2nd slot, newer bios in top slot), the flickering stops and I get great fps improvement over single card, BUT I get dead lockups in game. In Crysis, sometimes its within a minute or two, other times I can play without any issues. In DiRT the lockup happens as soon as I load into a race. The sound will go crazy, loop a few times, and then just stick in both cases. The cards stay under 70 at all times and they are not overclocked. Individually, each card performs with no problems.
post #7 of 14
I was thinking maybe your VRam, but since each card works fine on its own, it may be your system RAM. Test your sticks with Memtest86+ (stock speeds).

I also think you may be right in that your MOBO's northbridge may be bad (that is what happened to me in games when in SLI and I RMA'd my old 680i).

Also, it may be your PSU (most likely) since when in SLI you draw more power and it may be failing then as opposed to when you are not running in SLI. Try to test your PSU with an electric meter, if you have one, or swapping it for another PSU.
Edited by Gunderman456 - 12/19/08 at 8:49pm
 
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BitoHeaven
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G.Skill Trident X 2X8GB DDR3 2400MHz Samsung 840 PRO 256GB  Seagate Barracuda 7200.14 3TB SATA III 6Gb/s 64... Pioneer Blu-ray Burner 
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post #8 of 14
Looks like we are having the same issue at the same time.
http://www.overclock.net/nvidia/4286...s-related.html
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post #9 of 14
I had a similar problem but that was because I used an XFX 9800 GT and an unbranded 9800 GT pulled from an HP desktop. The HP had an SLI bridge connector so I assumed it was compatible.

It didn't work. I never looked into why, however. Both are exactly the same across the board other than video BIOS revisions.
post #10 of 14
Thread Starter 
Found the problem. It's the 180.xx drivers. I found other people having the same issues on the sli forums and I reverted to 178.24 drivers and everything has been perfect
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