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Crossfire HELP

I have 2x PCI-E 16x slots, If in have 2 cards installed, will they both be running at 16x or 8x??? if I'm completely wrong, could someone explain please.
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More about crossfire help
  1. It depends on your motherboard! In any case there is not much of a performance difference http://www.tomshardware.com/reviews/p67-gaming-3-way-sli-three-card-crossfire,2910-16.html
  2. i don't really understand that chart. but if i run 2 6970's in PCI-E 16x x2, will they run at 8x or 16x each?
  3. It depends on what motherboard you have! X58 chipset 790FX and 890FX chipsets or an Intel board with nf200 chip x16 x16!
  4. Gigabyte GA-890FXA-UD5 MB - AMD 890FX AMD SB850
  5. i know there both 16x but, i was told that if i crossfire 2 card, in those slots that both cards will run at 8x, to share the load and make up the 16x.. is this correct or not?
  6. Best answer
    Incorrect your board will do two card CF at x16 x16!
    "2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2) (Note 1)
    1 x PCI Express x16 slots, running at x8 (PCIEX8) (Note 2)
    1 x PCI Express x16 slots, running at x4 (PCIEX4)

    (Note 1) For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16_1 slot; if you are installing two graphics cards, it is recommended that you install them in the PCIEX16_1 and PCIEX16_2 slots."
    This is one of the main reasons to buy an AMD 890FX chipset board!
  7. oh ok, so mine will be running at 16x.. and will it be over kill for eyefinity?
  8. Best answer selected by CulabunT.
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