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why is 570 SLI scaling so bad? or is it Tomshardware is rigged?

post #1 of 31
Thread Starter 
see

http://www.tomshardware.com/reviews/...ling,2865.html

almost 21% more faster with 2x 6950s

anyone else have other reviews for gtx570 SLI?
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post #2 of 31
I just quicky looked at a few games like Crysis, Stalker and GTX 570's in SLi are beating a pair of 6950's?
What the hell are you talking about?

You read the article?
The Radeons are faster usually but that doesn't make up for their driver issues.
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post #3 of 31
Just Cause 2 in that review had PhysX enabled which is just down right idiotic since that just messed with the scaling vs something that doesn't even support it. Just Cause 2 actually scales incredibly on 570s.
Heres another review,
http://benchmarkextreme.com/Articles/GTX%20570/P21.html
Just know that the last three benchmarks were done with PhysX enabled. Test were done on 1600p.
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post #4 of 31
Tom's is using 266.58 drivers. Maybe those have multi-GPU scaling issues.
post #5 of 31
Quote:
Originally Posted by LivingChampion View Post
Just Cause 2 in that review had PhysX enabled which is just down right idiotic since that just messed with the scaling vs something that doesn't even support it. Just Cause 2 actually scales incredibly on 570s.
Heres another review,
http://benchmarkextreme.com/Articles/GTX%20570/P21.html
Just know that the last three benchmarks were done with PhysX enabled. Test were done on 1600p.

Agreed... running PhysX on to determine scaling is stupid because one GPU will have the PhysX load on it as well as rendering.
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post #6 of 31
Quote:
Originally Posted by LivingChampion View Post
Just Cause 2 in that review had PhysX enabled which is just down right idiotic since that just messed with the scaling vs something that doesn't even support it. Just Cause 2 actually scales incredibly on 570s.
Heres another review,
http://benchmarkextreme.com/Articles/GTX%20570/P21.html
Just know that the last three benchmarks were done with PhysX enabled. Test were done on 1600p.
Tom's did not say PhysX was enabled.
post #7 of 31
Quote:
Originally Posted by Riou View Post
Tom's did not say PhysX was enabled.
Yeah, but if you compare the numbers to the other review you can assume that PhysX was enabled. The other review had 100% scaling even at Tri-Sli without PhysX and Toms had very weak scaling so it can be assumed unless Tom bull****ted the numbers which I doubt.
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post #8 of 31
tri sli scaling is almost non-existence on just cause 2. something's up. dual-SLi was beating 6950s.
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post #9 of 31
Quote:
Originally Posted by LivingChampion View Post
Just Cause 2 in that review had PhysX enabled which is just down right idiotic since that just messed with the scaling vs something that doesn't even support it. Just Cause 2 actually scales incredibly on 570s.
Heres another review,
http://benchmarkextreme.com/Articles/GTX%20570/P21.html
Just know that the last three benchmarks were done with PhysX enabled. Test were done on 1600p.
Yeah, if you add GPU water Simulation it totally disables SLI. Which is just stupid, to be honest!
    
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post #10 of 31
Quote:
Originally Posted by LivingChampion View Post
Yeah, but if you compare the numbers to the other review you can assume that PhysX was enabled. The other review had 100% scaling even at Tri-Sli without PhysX and Toms had very weak scaling so it can be assumed unless Tom bull****ted the numbers which I doubt.
They used different drivers. Tom's used 266.xx drivers. The other review used 262.xx drivers. It is plausible Nvidia has a bug in the newer drivers.
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