Nvidia has released the Beta Forceware 185.65 driver for Windows XP and Vista. These drivers are for the GeForce 9, 100 and 200 series. They add support for the new GeForce GTX 275, add an Ambient Occlusion option, provide CUDA 2.2 support, have a range of performance improvements over the Forceware 182 series in games such as Far Cry 2, Crysis: Warhead and Fallout 3 and contain a range of bug fixes. The package also contains the 9.09.0203 PhysX drivers.