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Can I put 5770 in CrossFire on a ASUS P5KC MOBO?

I have this MOBO (ASUS P5KC) and I was considering getting a second 5770 for it. I read the specs and I saw that it has 2 PCIe 16x, but one of it is said to be "x4 mode" or something like that.

So before doing my purchase, I was wondering if the MOBO could take it or not.

Thank you very much for your help.
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  1. Best answer
    Crossfire on x16 x4 takes a performance hit and is not recommended although it will work just will not give the same gain as x8 x8 or x16 x16.
  2. rolli59 said:
    Crossfire on x16 x4 takes a performance hit and is not recommended although it will work just will not give the same gain as x8 x8 or x16 x16.


    Thank you for the reply. :)

    I checked some other cards' specs for similar performances, and it seems that the best alternative would be to sell my current 5770 and upgrade to a single 5870. The 5870 offers roughly the same performances as a 5770 CrossFire setup. For about the same price as if I was to buy 2 5770.

    I wish to stick to ATI cards, because of their low energy usage, price and how silent they are compared to NVidia's.

    If you know of a better alternative, please do tell. :)


    Thanks again for the info. Much appreciated.
  3. Best answer selected by Hynad.
  4. This topic has been closed by Mousemonkey
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