12.4

http://support.amd.com/us/gpudownload/Pages/index.aspx

Features:

Windows XP support for the AMD Radeon HD 7900 Series, AMD Radeon HD 7800, and AMD Radeon HD 7700 Series

In addition to Windows 7 and Windows Vista support, Catalyst 12.4 now also introduces Windows XP (64-bit/32-bit) support for the AMD Radeon HD 7900, AMD Radeon HD 7800, and AMD Radeon HD 7700 Series

Super Sampling Anti-Aliasing: Level of Detail (LOD) Image Quality enhancements

Supported on the AMD Radeon HD 7900, AMD Radeon HD 7800, and AMD Radeon HD 7700 Series
LOD Image quality enhancements have been improved when enabling Super Sample Anti-Aliasing and Adaptive Anti-Aliasing through the AMD Catalyst