I just don't get it. Generic physics engines, used by Crysis and nearly all other physics-heavy games, runs off spare cores in a current quad or octo Nehalem without any performance hit. The idea of running physics off graphics card is just foolish. Graphics is in nature parallel, physics processing isnt, and should be handled by cpu instead. ATI and Nvidia are just pushing those because they make gpus and not cpus. That graphics card is under enough stress as it is, it doesn't need to try to run something that it's not good at.