Topic Title: 290x Crossfire PCI 3.0 8x/8x vs 16x/16x
Topic Summary: Is there any difference?
Created On: 12/30/2013 05:28 AM
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 12/30/2013 05:28 AM
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KillerKollar
Peon

Posts: 11
Joined: 10/22/2008

Can anyone find any benchmarks about 290x Crossfire in PCI 3.0 8x/8x vs 16x/16x?I know there wasn't any difference in performance in the past,but with this new Crossfire system,I would be interested to see that is that change anything or not?Or PCI 2.0 16x/16x vs 3.0 16x/16x since 2.0 16x has the same bandwidth as 3.0 8x.

 12/30/2013 02:57 PM
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Vantharas
Polygon Pusher

Posts: 3508
Joined: 03/01/2009

Less then 1~3% performance difference in games depending on the game. However openCL and other intense compute applications have a pretty substantial difference in PCI-E 2.0 16X and 3.0 16x. 

Why is beyond me But I don't use those types of programs so have never bothered to look into it. 



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 12/31/2013 06:51 AM
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KillerKollar
Peon

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Joined: 10/22/2008

Thanks for the answer

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