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Thread: Nvidia's PhysX is quite CPU demanding, tests show

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    Default Nvidia's PhysX is quite CPU demanding, tests show

    The folks over at Fudzilla have discovered that Nvidia's GPU PhysX relies more on the CPU than one would expect - a lot more than a dedicated PPU does, anyway.

    Read the story in full here...

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    WOW, that is a HUGE drop in performance when the CPU is loaded. Looks like you really need a Quad Core to adequately take care of the demand if you plan on pushing your system.

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    i noticed that long time ago. and it's cuda to blame. i'm no expert and i didn't research this, but it seems to me that the cpu is supplying the data to gpu therefore cpu can be a bottleneck. so if you have the fastest gpu, you need a pretty fast cpu to use the potential of cuda.

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    I'm wondering which OS was being run?

    When Folding under XP32 The same thing happens ...add load to the cpu and the folding rate collapses.
    However under XP64 and Vista 64 Things go much better and there is little effect when the CPU is loaded.
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