WinHQ.Net has a short write-up on a comparison between three Detonator driver revisions.

The previous driver version, the 23.11's, was released in early December before the Geforce4 was released. This means there was probably a nil amount of optimization for the new chipset. The 28.32 have more support and features including DirectX 8.1 and OGL 1.3 updates. Another update is associated with the nView technology.

Read more