AMD just demonstrated its Cloth and Destruction demos based on the Havoc engine, and AMD was able to balance the performance between CPU and GPU. Godfrey confirmed that AMD believes in open standards such as OpenCL, and therefore AMD was happy to demonstrate graphics accelerated physics with the Havok engine. The funny part is that Intel owns Havok and this cooperation between Intel and AMD works really well, at least on a technical level. OpenCL lets AMD choose if the physics should run on GPU or CPU and demos even had toggle scrolls between CPU and GPU acceleration.