AMD lately released its 12.11 Beta 8 driver, which offers performance improvement for several games.
New features of AMD Catalyst 12.11 Beta 8 Driver
•Improves performance up to 5% in Max Payne 3
•Includes single GPU performance updates for Far Cry 3
•Improves CrossFire scaling for Planetside 2 (Crossfire scaling is still limited to ~30% at 2560×1600)
•Resolves the Skyrim lighting issue (missing a lighting pass) for the AMD Radeon HD 7900 Series
•Resolves the hang encountered playing Dishonored on the AMD Radeon HD 6000 and AMD Radeon HD 5000 Series
•AMD Catalyst 12.11 Beta 8 for Linux includes significant performance improvements for Left for Dead 2