Originally Posted by Yaboze
I believe that Physx could be offloaded to one of the CPU's cores and be just as effective. You don't NEED a GPU for it, but Nvidia makes it that way.
Well.... you do. The problem with physics calculations in general is they're spikey. Having tons of particles or fluidity to water / cloth takes way too many cycles to calculate. That's why highly parallel things like gpus work for it.
It's impossible to run something like nvidia fluid physics demo without something highly parallel. I think they purposely blow the programming out of proportion to make it necessary.
Really though, there's no way at all to do that many calculations on only a quad core cpu.
It'll take a long time for that to change.