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Crossfiring on PCI 3.0 X16 and PCI 3.0 X4?

So I am thinking of crossfiring some HD 7850'. I already have one, and when I can get a second for £100 I think I will do it. So how much would the second lane, PCI 3.0 X4 slow the configuration down? BTW I have a GA-Z77-D3H motherboard.
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  1. Best answer
    Should be fine. PCIe 3.0 is twice as fast as PCIe 2.0, and PCIe 2.0 x8 wouldn't bottleneck a 7850, so you should be fine. I wouldn't recommend going dual 7850's, they aren't that great. I've done it before, and it was pretty crap. I spent more time configuring it, then actually playing games with it.
  2. JJ1217 said:
    Should be fine. PCIe 3.0 is twice as fast as PCIe 2.0, and PCIe 2.0 x8 wouldn't bottleneck a 7850, so you should be fine. I wouldn't recommend going dual 7850's, they aren't that great. I've done it before, and it was pretty crap. I spent more time configuring it, then actually playing games with it.


    Well I am waiting for HD 9xxx or GTX 8xx, so if I can get a HD 7850 card for £100 it will be better than one HD 7850 that is doing me okay atm.
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