v9.1 [Aug 31, 2011]
The latest version of this software includes the latest PhysX runtime builds to support all released PhysX content, has fixed a bug that prevented PhysX from being accelerated on Optimus PCs, supports NVIDIA PhysX acceleration on all GeForce 8-series, 9-series, 100-series, 200-series, 300-series and 400-series GPUs with a minimum of 256MB dedicated graphics memory and 32 CUDA cores, has bug fixes for Mafia 2 and much more
