Actually, ATI cards are not meant to work with PHYSX, period. However, there is a tweak you can do in order to get it to work. It is not as simple as just dropping it in and having PHYSX support though. However let me be honest, as a user that has compared both ATI and NVIDIA side by side you are not losing anything that you will actually notice, by going with an ATI card and not having PHYSX. -Logicaly
