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Please help, I have a mobo that has a pcie 3.0 x16 and pcie 2.0 x4. I want to crossfire 270x, will the performance suffer?

Hi everyone, I have powercolor 270x PCS+ gpu and an ECS H87 mobo (http://www.ecs.com.tw/ECSWebSite/Product/Product_Detail.aspx?DetailID=1460&CategoryID=1&MenuID=172&LanID=0). I have entered a certain competition and luckily won another Powercolor 270x PCS+ gpu. Im thinking of multi gpu setup, will the performance decrease that big since i only got a 2nd pcie slot with 4x and 2.0 revision?
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More about mobo pcie x16 pcie crossfire 270x performance suffer
  1. Best answer
    Yes, performance WILL suffer.

    Only Z97 / Z87 designated board and capable of running crossfire and SLI decently for gaming.
  2. Yes. A 4x PCI-E 2.0 slot is not enough to get worthwhile performance returns from crossfiring R9 270Xs. I'd recommend an 8x PCI-E 2.0 or an 8x PCI-E 3.0 for the second card, to make it useful.

    Even then, I typically don't recommend crossfire or SLI. Just way too many problems to be a good choice for most people.
  3. awww, I'm having second thoughts in trying it out since i need to buy a new psu to crossfire, and knowing what you've both implied,I may need to buy a new mobo.

    btw im gaming on 1080p, would that make any difference?
  4. None. A PCIe x4 is not designed to run bandwidth intense graphics.
  5. Ok thanks sir!
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