This is a beta release from the Release 275 family of drivers (versions 275.xx to 279.xx). You can read more about this family of drivers on GeForce.com.
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 275.50 WHQL-certified release except for the following changes:
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.