Nvidia users may want to check out the latest set of drivers, after the company released the WHQL-certified version of the 178.13 version GeForce driver. The driver includes support for all the newest 200 series cards, along with including PhysX software support. It also supports 2 and 3-way SLI on Intel boards.
The PhysX support is backwards compatible with earlier cards, including 8000 series cards, but not 7000 series, provided they have at least 256MB of RAM. Nvidia cites performance improvements in several games, such as Assassins Creed, Bioshock, COD4 and more. Numerous bug fixes were presented as well.
You can download the drivers on Nvidia's site