different gpu instead of cpu as physx

i have a gtx 980 classified if i put say a gtx just example in as physyx along with my 980 would it be better than cpu?
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More about gpu cpu physx
  1. Your 980 handles the Physx itself, its not being offloaded to the processor.
  2. but if i added another gpu not sli would it improve performance
  3. It depends on the GPU you would be adding. Some cards compute Physx slower than your 980, so it would reduce performance.
    That being said, almost any card would be wasted energy and heat, as the 980 is more than capable.
  4. yeh but with new direct x 12 on the horizon u can stick any two cards together and they will stack even ram.
  5. Best answer
    Then the one wouldnt be processing Physx for the first anymore. Plus a setup like that is bound to have more issues than good. Different architectures with varying memory sizes across different sizes buses dosent seems very efficient.

    There is also the fact the 980 shouldnt need any help to begin with.
  6. yeh i know its powerfull enough nothing wrong with more also new direct x 12 will read multiple cards as one thats why there wont be any complications and why they stack vram etc u can even put amd with an nvidia card aswell
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