This is regrettably true. PhysX is an Nvidia technology and, as I understand it, is supported to run on Nvidia GPUs. The consequence is that developers who are

This is regrettably true. PhysX is an Nvidia technology and, as I understand it, is supported to run on Nvidia GPUs. The consequence is that developers who are faced with this option will quickly realize that it'll be easier to just run the same tech on a user's machine regardless of which GPU solution they have (Nvidia, AMD, Intel) and optimize their game the same way for all platforms. Can I use an NVIDIA GPU as a PhysX processor and a non-NVIDIA GPU for regular display graphics? No. There are multiple technical connections between PhysX processing and graphics that require tight collaboration between the two technologies. To deliver a good experience for users, NVIDIA PhysX technology has been fully verified and enabled using only NVIDIA GPUs for graphics. http://www.nvidia.ca/object/physx_faq.html http://www.nvidia.ca/object/physx_faq.html EDIT: I'm talking about game development