[citation][nom]touchdowntexas13[/nom]Hopefully developers in the future will try and get 100% out of the processor so that consumers don't have to resort to buying extra Nvidia cards just for the PhysX...[/citation]
PhysX and Physics are two totally different technologies. One runs on dedicated hardware (GPU), the other, physics (Havok), is software driven. PhysX titles are scarce, but it'll be very very very hard for software physics to catch up to PhysX anytime soon. If you want PhysX, you NEED an nVIDIA card to run it. Software physics is NOT a PhysX replacement.