"GPU physics could be achieved on a single graphics card, and would make a big difference to benchmarks. Even though talks between Havok and ATI have broken down since Intel bought the company, GPU physics were in development for quite some time before that, and it looks as though Unreal Tournament III could even support GPU physics with a future update.
An anonymous source who works in game development told Custom PC that 'the most interesting stuff we've done recently is with a "triple A" game, that's shipping now actually, which is physics-accelerated on GPUs, and in fact in the engine that the game is built upon.'
So which 'triple A' game would this be? 'I'm not allowed to name things at the moment,' said our source, 'which is why I'm being a little bit evasive, but both the engine and the game benefit from GPU acceleration in physics for the eye candy stuff, and it has a very significant benefit in benchmarks, but the developer hasn't yet made a public statement about that.' However, they did say that you could buy the game now."