NVIDIA slipped in an update to the PhysX System software, version 8.11.18. The piece of software serves as a backbone to the PhysX API, and is compatible with 32-bit and 64-bit variants of Windows XP and Windows Vista. It provides hardware acceleration of PhysX with Ageia PhysX cards and graphics accelerators based on the NVIDIA GeForce 8 series, GeForce 9 series (with at least 256 MB of memory) and GeForce GTX 200 series. The software has been signed on 18 November, and is yet to replace version 8.10.29 from NVIDIA's software download portal. DOWNLOAD: NVIDIA PhysX System Software 8.11.18.