официально:
NVIDIA PhysX System Software
9.10.0223 WHQL Windows XP/Vista, Windows 7
http://www.nvidia.com/object/physx-9.10.0223-driver.html http://us.download.nvidia.com/Windows/9.10.0223/PhysX_9.10.0223_SystemSoftware.exe GeForce 400-series, 300-series, 200-series, 100-series, 9-series, and 8-series GPUs (with minimum of 32 cores and a minimum of 256MB dedicated graphics memory)
Includes the latest PhysX runtime builds to support all released PhysX content including Metro 2033 and others.
Changes & fixed issues in this release
o Bug fixes for Metro 2033 in SDKs version 2.8.3.
o Clothing bug fix in SDKs version 2.8.3 with respect to max distance clamping.
o GPU PhysX Performance optimizations for GeForce 400-series GPUs in all GPU PhysX enabled SDKs versions.
o Better error handling for GPU PhysX in the unlikely event of a CUDA error in SDKs version 2.8.3.
o Other miscellaneous bug fixes.
Supports NVIDIA PhysX acceleration on all GeForce 8-series, 9-series, 100-series, 200-series, and 300-series GPUs with a minimum of 256MB dedicated graphics memory and 32 CUDA cores. Note: Some applications may have higher minimum requirements.
Experience GPU PhysX acceleration in many games and demos, some of which are highlighted in PowerPack downloads here.
Supports NVIDIA PhysX acceleration on GeForce via CUDA 3.0 for SDK versions 2.7.1, 2.7.3, 2.7.4, 2.7.5, 2.7.6, 2.8.0, 2.8.1 and 2.8.3 (requires graphics driver v196.21 or later).
Supports control of your GPU PhysX configuration from the NVIDIA display driver control panel. (requires graphics driver v196.21 or later).
AGEIA PhysX processors users should use and install an older PhysX system software such as version 8.09.04. Note – AGEIA PPU acceleration support for 2.8.1 SDK or earlier, and Windows Vista and Windows XP only.