Apparently, a group of enthusiasts from Israel-based NGOHQ.com have managed to port Nvidia's PhysX physics engine to ATI Radeon cards. If indeed true, this spells cross-compatibility between GPU-acceleration platforms and GPUs of rival graphics cards makers Nvidia and ATI.

However the Nvidia developer team has denied the possibility, maintaining that both CUDA and PhysX are developed exclusively for Nvidia GPUs. Nvidia even invited NGOHQ.com's Editor-in-Chief Eran Badit to join its developer program, offering support for running PhysX on ATI Radeon cards. The company said it would be delighted if AMD actually adopted PhysX support for ATI Radeon cards to enable running of CUDA applications on them.

Meanwhile, AMD has a different version. Rob Keosheyan, senior public relations manager at AMD, said AMD has chosen Intel's Havok engine over Nvidia's PhysX engine for a couple of reasons. First, they think Havok is superior technology-wise. Second, Intel has been more willing to collaborate with AMD as compared to Nvidia which hasn't been a great collaborative partner (in the eyes of AMD).

AMD might continue to cold shoulder Nvidia and its PhysX engine and Nvidia might continue to market its PhysX engine but the bottom line is that cross-compatibility is the key to consumer happiness.