Multi GPU Folding and PCIe Lanes

Discussion in 'bit-tech Folding Team' started by enigmo, 20 Apr 2010.

  1. enigmo

    enigmo Kettleboiler Extraordinaire

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    I've just got a 2nd hand Asus P5Q-Deluxe to use as a dedicated folding rig. Currently it only has an 8800GTX in it, but I'd like to add more cards. The board comes with 3x PCIe 16 physical slots and will take 3xgraphics cards from what I can see, just not use them all as Crossfire or anything fancy. If I add a 2nd card, it will give me 8x and 8x for the GPUs which is fine, but if I add a 3rd card it'll get only 4x lanes. Are there any issues regarding ppd output that anyone has come across, or worse, cards just not running with only 4x lanes?
     
    enigmo, 20 Apr 2010
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  2. saspro

    saspro IT monkey

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    You can run a card for folding in a 1x slot with no problems. a 4x slot will be fine.
     
    saspro, 20 Apr 2010
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  3. enigmo

    enigmo Kettleboiler Extraordinaire

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    Ta. Will probably need a much better PSU first, but good to know.
     
    enigmo, 20 Apr 2010
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  4. Gareth24

    Gareth24 Folding = vdubs

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    Nice i'll look at picking up another card then. :thumb:
     
    Gareth24, 20 Apr 2010
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