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Will my motherboard bottleneck crossfire?

Last response: in Graphics & Displays
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September 25, 2012 10:55:03 PM

I'm going to crossfire 6850s and my P67 pro3 SE is x16 x4. would it be better to just get one?

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September 26, 2012 1:11:24 AM
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according to here http://forums.anandtech.com/showthread.php?t=2200539 them in crossfire will run about 93% of what they would run at on x16 and x16 lanes. so no its not that much of a bottleneck id say dont worry about it
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September 26, 2012 2:43:43 AM

select best answer lol
September 26, 2012 3:46:47 AM

Best answer selected by generalqwer.
October 3, 2012 3:26:08 PM

I had the EXACT setup and I experienced a gain of anywhere from 20-50 frames on my games when I would disable crossfire. The chart that the guy posted is only an estimate, but sadly it is much more dramatic then you would hope. I was disappointed. If you want to crossfire/SLI, I recommend that all the PCI slots are x16. Experiment for yourself and you'll see. This is why on their website they have a list of compatible crossfire setups that give you good performance.

http://www.asrock.com/mb/overview.asp?cat=VGA&c=CF&Mode...

This pretty much shows that anything more intense than those graphics cards will be bottlenecked.
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