nVIDIA PhysX System Software 9.12.0213

Supports NVIDIA PhysX acceleration on all GeForce 8-series, 9-series, 100-series, 200-series, 300-series, 400-series, 500-series, and 600-series GPUs with a minimum of 256MB dedicated graphics memory.

• Includes the latest PhysX runtime builds to support all released PhysX content.
• Changes & fixed issues in this release
  • Updated SDKs for Batman Arkham City, Alice 2 and other 2.8.4 applications.
  • Fixed a bug that caused Alice 2 to crash.
• Supports NVIDIA PhysX acceleration on all GeForce 8-series, 9-series, 100-series, 200-series, 300-series, 400-series, 500-series, and 600-series GPUs with a minimum of 256MB dedicated graphics memory.
  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 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 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.

We have a discussion thread open on these drivers right here.