The version 8.10.29 Nvidia PhysX software works with the 32 and 64bit versions of Windows XP and Vista and supports Ageia PhysX cards and GeForce 8, 9 and GTX 200 series graphics cards that have at least 256MB of onboard memory. This release supports the 2.8.1, 2.8.0, 2.7.4, 2.7.3, 2.7.2, 2.7.1, 2.7.0, 2.6.x, 2.5.x, 2.4.x and 2.3.x PhysX runtime engines.