Here are my crossfire results using Mantle in the game Thief. I have to say i think AMD's DirectX cpu overhead performance needs some work at 1080P. Nvidia offer better DX cpu overhead performance at this resolution in this game. However Mantle blows both vendors DX11 performance out of the water completely, which is great. System Specs 2700k@5.3ghz 290P Crossfire @1250/1625 16GB DDR3 2133Mhz 14.6 Beta Win8.1 64 Bit 1080P Mantle Spoiler 1080P DX Spoiler 1440P Mantle Spoiler 1440P DX Spoiler
Yes. Support was made possible via 14.6 drivers and Thief was patched a day later. Crossfire works and it provides a big fps boost for crossfire.
Using 14.4 WHQL driver with ACP/ACP64 profiles from 14.6 drivers and works great here.Double FPS with crossfire enabled.
