AMD releasefda hot fix driver on the 26th of November that will contain profiles to enable ATI CrossFireX technology for both the DirectX 9 and DirectX 11 version of this game. Please ensure you use the hot fix driver in order to get the best performance from your CrossFire video card setup. Those with a single GPU don't have to worry about this patch.
The driver is available from the following location:
http://support.amd.com/us/kbarticles/Pa ... mance.aspx
Applicable Video Cards:
o ATI Radeon™ HD 5000 Series
o ATI Radeon™ HD 4000 Series
o ATI Radeon™ HD 3000 Series
o ATI Radeon™ HD 2000 Series
Applicable Operating System:
o Windows 7® 32-bit Edition
o Windows 7® 64-bit Edition
o Windows Vista® 32-bit Edition
o Windows Vista® 64-bit Edition
o Windows® XP 32-bit Edition
o Windows® XP 64-bit Edition