it will just get better and feel more real OR nothing, you im sure arent gonna be forced to use it.
and musscles cpu's CANT do true phsyx calc , they arent designed for it in real time, gpu's shader units are more suited to that work as are the aegna(Sp) ppu cards, tho they where a poor design so they fail it.
CPU's can do it by brute force. It takes a lot more power than it should - thus the gigantic FPS hit. Physx CAN be good, the problem is all the applications/games so far use it to *ADD* new stuff, not accelerate whats already there.
It needs to be:
*Part of the game, works fine via software (if a little slow on max physics, a la fear)
*PHYSICS, not GRAWS 'random debris' - we want interactivity and detail, not useless FPS wasters
PCI was a killer for Ageias cards. GPU can take over, its fancy shaders can do this a lot quicker than a CPU, for a lot less performance loss