Nvidia has released new GeForce 275.50 beta drivers

This is a beta release from the Release 275 family of drivers (versions 275.xx to 279.xx).

This driver package supports GeForce 6, 7, 8, 9, 100, 200, 300, 400, and 500-series desktop GPUs as well as ION desktop GPUs. This driver package also includes the 3D Vision Controller driver.

This driver is identical to the GeForce 275.33 WHQL-certified release except for the following change:

New in Release 275.50

Enables SLI technology* on SLI-certified motherboards with AMD chipsets: 990FX, 990X, and 970.
Improves 3D Vision performance with Duke Nukem Forever with 3-way SLI and Quad SLI technology.
NVIDIA 3D Vision

With Release 275 drivers, the 3D Vision Controller driver is now included with all GPU driver installations. This driver package includes v275.33 3D Vision Controller driver. Users are no longer required to install a separate 3D Vision Controller driver or CD driver. For more information, please view this knowledgebase article for more information.
Added the following 3D Vision game profiles:
Duke Nukem Forever Demo
Mars benchmark
Rise of the Immortals
Rusty Hearts
Updated the following 3D Vision game profiles
Alice Madness Returns – updated in-game convergence and rating is now Good

Download for Windows Vista/7 64-bit
Download for Windows Vista/7 32-bit
Download for Windows XP 32-bit
Download for Windows XP 64-bit