ATI released a Catalyst 8.11 hotfix that improves performance on the Intel X58 platform, you can download it over here. The update also promises performance improvements in Far Cry 2 and Stalker Clear Sky.
Improves performance in various Direct3D and OpenGL applications on the X58 platform. AMD's next official ATI Catalyst release (ATI Catalyst 8.12) will include these optimizations
Improves performance for the DirectX 9 version of Far Cry 2 on CrossFire™ compatible systems
Improves performance for the DirectX 10 version of Far Cry 2 on both single and CrossFire™ compatible systems
Improves performance for the DirectX 10 and DirectX 10.1 version of Stalker Clear Sky on both single and CrossFireX configurations at higher resolutions
Brothers in Arms - Hells Highway no longer displays corruption on the 'Black Friday' level.