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 under DX. 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
[email protected]
290P Crossfire @1250/1625
16GB DDR3 2133Mhz
14.6 Beta
Win8.1 64 Bit
1080P Mantle
1080P Nvidia DX
4770K @ 4.7 TitanSli @ 1280/1895
1080P DX
1440P Mantle
1440P DX
System Specs
[email protected]
290P Crossfire @1250/1625
16GB DDR3 2133Mhz
14.6 Beta
Win8.1 64 Bit
1080P Mantle
1080P Nvidia DX
4770K @ 4.7 TitanSli @ 1280/1895
1080P DX
1440P Mantle
1440P DX
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