AMD is seriously pushing its new 12.7 beta drivers. And from the benchmarks they're looking impressive!
Quoted from the article:
Performance improvements in 12.7 Beta vs. GPU launch drivers
Batman: Arkham City (Up to 65% faster on the AMD Radeon™ HD 7970)
The Elder Scrolls V: Skyrim (Up to 55% faster on the AMD Radeon™ HD 7700 Series)
Total War: Shogun 2 (Up to 17% faster with the AMD Radeon™ HD 7900 Series)
DiRT® 3 (Up to 7% faster with the AMD Radeon™ HD 7800 Series)