Quote Originally Posted by kromosto View Post
dont worry got myself a 7970 yesterday and on everytihng max (but didnt try full physics yet) 100+ fps all the time

EDIT: tried it physics maxed and still 100+ fps with 3770 stock.
Just out of curiosity where did you test this? I ask because with my 680s and on my 670 system, physx is considerably slower running on the cpu only. I'm guessing you didn't use a demanding area of the game. In some sections of the game, playing with 4 players amongst all the various elemental effects, explosions and such, things can easily drop into the 30fps range even with gpu physx.