Here's a look at the features:
- ForceWare 78.01 adds support for GeForce 6500 only. There are no additional driver updates in 78.01 since 77.77.
- SLI support for GeForce 6600 and GeForce 6600 LE
- New SLI rendering mode (SLI Antialiasing) for increased antialiasing performance - Broader SLI optimizations and validation for the latest games
- Resolved SLI Antialiasing issues with some applications and generating screen shots.
- For a full list of other issues resolved, please view the driver release notes.
- Microsoft DirectX 9.0c and OpenGL 2.0 support
You can grab them here.