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    GPU or CPU for Nvidia Physx?

    Discussion in 'Gaming (Software and Graphics Cards)' started by VENOMs7000, Oct 31, 2012.

  1. VENOMs7000

    VENOMs7000 Notebook Enthusiast

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    I have a DELL 17SE with:
    6GB ram
    650M 2GB DDR5 130W
    and
    Intel i7 3610qm (with HD4000)



    My question is....

    For gaming what to chose for my Nvidia physx processor?? CPU OR GPU......(or leave on autoselect)/ and WHY?? Please


    Which one will be better?

    whats the difference? and what are the consequences of selecting each of them ??

    Thnx in advance



    P.S- BTW I just tested the Batman Arkham City™ with CPU and GPU and Auto settings.... here are the results:

    CPU:
    Min FPS - 16
    Max FPS - 80
    Average.FPS- 40

    GPU (650m)
    Min FPS - 17
    Max FPS - 51
    Average FPS - 33

    Autoselect = 650m

    ??? Can someone explain this unexpected results to ME!!!???? o_O*

    Because from what I have heard. There are some games that run better on CPU for Physx and some that work 30% better with GPU.
    Basically either the game is software Physx or Hardware Physx based. (pls correct me if I'm wrong somewhere)

    I got different results for Batman Arkham Asylum...
     
    VENOMs7000, Oct 31, 2012
    #1
  2. Micaiah

    Micaiah Notebook Deity

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    The reason why PhysX runs better on the CPU in your case is because you're taking the load off the GPU and dedicating it solely to frame rendering. Having a PhysX on the GPU works best if you have another nVidia GPU available or your GPU is strong enough to process both at the same time.

    It appears in your scenario, the GPU is too taxed to perform frame rendering on top of being a physics accelerator, and the CPU had enough resources to offload the physics processing from the GPU.
     
    Micaiah, Nov 1, 2012
    #2