Changelog Catalyst 10.8 WHQL (Auszug):

Performance enhancement for Eyefinity Quad ATI CrossFireX configurations
- Performance has been greatly improved for users running with ATI Eyefinity on a Quad ATI CrossFireX™ configuration

Anti-Aliasing support for StarCraft II
- ATI Catalyst™ Control Center enabled Anti-Aliasing is now available for StarCraft II

Catalyst™ Application Profiles
The following application profiles are available with this release of Catalyst™ 10.8:
- Singularity - CrossFire™ profile update
- Mafia 2 - CrossFire™ profile update
- Final Fantasy XIV Benchmark - new CrossFire™ profile
- Lord of the Rings Online - new CrossFire™ profile
- Aliens Vs. Predator - CrossFire™ profile update

Performance Improvements: The following performance gains are noticed with this release of Catalyst 10.8:
- Far Cry 2
Performance increases 2-6% on ATI Radeon™ HD 5800 Series single and CrossFire™ configurations
Performance increases 2-4% on ATI Radeon™ HD 5700 Series single and CrossFire™ configurations
Performance increases 3-8% on ATI Radeon™ HD 4800 Series single and CrossFire™ configurations

- Left 4 Dead 2
Performance increases 3-5% on CrossFire™ ATI Radeon™ HD 5800 series and CrossFire™ ATI Radeon™ HD 5700 series configurations

- Stormrise
Performance increases 5-10% on ATI Radeon™ HD 5600 series and ATI Radeon™ HD 5500 series configurations

Quelle: PCGames Hardware