Link to the AMD Catalyst 12.1a Preview driver:  http://support.amd.com/us/kbarticles/Pages/Catalyst121apreviewdriver.aspx
 
Highlights of the AMD Catalyst™ 12.1a Preview driver:
 

The AMD Catalyst™ 12.1a Preview driver includes all of the features found in AMD Catalyst™ 12.1 Preview Driver, plus the additional changes for an upcoming Rage update:

·         Resolves some new texture corruption issues introduced by the latest version of the game
·         Improved performance ~5%
·         Smoother game play and reduces multicore sync points
·         Fixed mapbuffer failures when switching maps on 32-bit systems.
·         Fixed a game crash when switching maps back and forth on 32 and 64bit systems

 

Link to the AMD Catalyst 11.12 CAP2:  http://sites.amd.com/us/game/downloads/Pages/crossfirex-app-profiles.aspx

 

AMD Catalyst™ 11.12 CAP2 update:
 

·         Project C.A.R.S.(DX9 version) :  Improves CrossFire performance
·         Counter Strike: Global Offensive:  Improves CrossFire performance