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GX2 vs 2x GX2

post #1 of 44
Thread Starter 
Hmm...countinuing on with my investigation with regards to QUAD SLI not functioning in the Crysis Bench or other titles. I ran Crysis with just one GX2 again to see what's going on.....

I get a 20FPS+ increase in Single Player going from 1 GX2 to Quad SLI, sadly there are still problems with lag spikes (driver issue more likely).

Anyone have any ideas why Quad SLI does not work for me in the Crysis Bench? But does in Single Player?
 
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post #2 of 44
I hate to ask some relatively simple questions, especially to you. But did you reformat when you got the gx2's and what drivers are you running?
    
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post #3 of 44
Thread Starter 
Yes i have reformatted several times, and i have used every chipset/GPU driver available. Currently using 174.74 WHQL's.
 
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post #4 of 44
It sounds like just one of those issues that can't be solved easily...

Either you have a ****e card and destroyed board.
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post #5 of 44
Thread Starter 
Quote:
Originally Posted by The_Rocker View Post
It sounds like just one of those issues that can't be solved easily...

Either you have a ****e card and destroyed board.
Cards have been tested individually in 3DMark and Crysis and COD4 and produced the same numbers. Both PCI-E slots have been tested also.
 
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post #6 of 44
mark im watching ur posts for a solution, im having the same problems, i get better crysis benchmarks on one card then quad SLI....and in single player i get like 20fps less in quad SLI then the single card....i took em back for 2 9800 GTXs and benched 48fps average....i took those back and got my GX2s back...i hope this is figured out soon

BTW theres a new beta driver out 174.85 on guru3d.com
    
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post #7 of 44
Thread Starter 
Quote:
Originally Posted by hoser1869 View Post
mark im watching ur posts for a solution, im having the same problems, i get better crysis benchmarks on one card then quad SLI....and in single player i get like 20fps less in quad SLI then the single card....i took em back for 2 9800 GTXs and benched 48fps average....i took those back and got my GX2s back...i hope this is figured out soon

BTW theres a new beta driver out 174.85 on guru3d.com
But i'm getting 20FPS+ more in Single Player. Just the benchmark doesn't show this and performs like a single card. This is what is bizarre about the whole thing.
 
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post #8 of 44
u think our 64bit OS has anything to do with it?
    
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post #9 of 44
C'mon guys. The answer is easy: History is repeating itself. Nvidia hasn't fixed the issues that plagued the 7950x2 cards, and hasn't done it with the 9800GX2s either. In certain applications Quad SLI works, but many many many tests show that performance is decreased or at best, unstable with Quad SLI, especially with AA/AF (which is what you want 4 GPUs for!).

IMHO I think the issues with Quad-SLI are a mixture of hardware and drivers. I also believe the 9800GX2 was released only as an 'afterthought' to ATI's 3870X2 and their dual-pcb cards so that ATI couldn't carve out a market niche.

Be prepared to put a LOT of time and effort into finding solutions to Quad-SLI problems, but the best of luck to you! Prove me wrong!!!
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post #10 of 44
probably just an issue with quad-sli and the benchmark.

honestly, who cares? its a benchmark...
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