AMD Catalyst 11.1a hotfix for AMD Radeon HD 6900 and AMD Radeon HD 6800 series graphics cards installed in a Windows 7 based system.

AMD Catalyst Driver 11.1a Hotfix Features:

* Performance improvements for AMD Radeon™ HD 6900 & AMD Radeon HD 6800 series graphics cards
* AMD Catalyst Control Center – New Tessellation controls
o Gives users control over the tessellation levels used in applications
* AMD Catalyst AI Texture Filtering updates
o The High Quality setting remains unchanged: This setting provides reference quality filtering from AMD hardware
o The Quality setting now matches the High Quality setting in all respects but one: it enables an optimization that limits tri-linear anisotropic filtering to areas surrounding texture mipmap level transitions, while doing bilinear anisotropic filtering elsewhere. This optimization offers a way to adjust filtering performance without visibly affecting image quality
o The Performance setting has also been updated. It now provides a smooth filtering option that is designed to eliminate most shimmering while preserving the detail provided by anisotropic filtering.

Instructions on how to install properly here: