Vista:
# Beta driver release.
# This driver supports single GPU and NVIDIA SLI™ technology on DirectX 9, DirectX 10, and OpenGL for GeForce 6, 7, and 8 series GPUs.
# Improved compatibility for Bioshock.
# Added HD post-processing for H.264, VC-1 and MPEG-2 HD content on GeForce 8500 series products.
# Numerous game and application compatibility fixes. Please read the release notes for more information on product support, feature limitations, driver fixes and known compatibility issues.
XP:
# Beta driver release.
# This driver supports single GPU and NVIDIA SLI™ technology on Microsoft® DirectX® 9.0c and OpenGL® 2.1 support.
# Improved compatibility for Bioshock.
# Added PureVideo™ HD decode acceleration for GeForce 8600, 8500 and 8400 series GPUs.
# Numerous game and application compatibility fixes. Please read the release notes for more information on product support, feature limitations, driver fixes and known compatibility issues.
Cards supported: GF 6/7/8 under Vista and GF 5/6/7/8 under XP.