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performance loss running 2x 780s on my asus z77 sabertooth (8x/16x = 2x sli being 8x/8x)

post #1 of 3
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Does that mean anything?

Will it run twice as slow or something?

some guy on timshardware said it does half but its from like 2008...
    
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i7 3770k @ 4.8ghz z77 sabertooth EVGA GTX 980 TI Classified corsair vengeance 16gb 
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corsair h100 2x coolermaster megaflow 200mm 1x coolermaster 140mm 4x cougar vortex 120mm pwm 
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windows 7 professional corsair tx750 coolermaster haf x 
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post #2 of 3
No it won't make any significant difference to go from x16-x8 mainly because graphics cards can't fully utilize x16 lanes just yet. Take into account that pcie gen 3 is new and does twice the performance of pcie gen 2, so pcie gen 3 at 8x is essentially a pci gen 2 x16 performance. You will see around 3% performance diff between x8 an x16. In sli this is reduced even further.

Hope this helps. Cheers.
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post #3 of 3
no man your good and that's actually the 1155 mobo standard as only the few more expensive boards
on 1155 run x16/x16..
but again your fine and will have NO performance issues.
x16/x16 is a few frames better at higher resolutions like 5760 x 1080p and up
but even then it's perfectly fine @ x8/x8.
enjoy.

cheers.
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