cant post exact stats since i'm at work, did a few tests with old Drivers (amd 14.9 and 14.12) resulting in a slight decrease in fps/score with the updated Drivers.
PC:
CPU: Intel i5-2500k @4GHZ
GPU: Sapphire Radeon R9 290 Vapor Tri-X OC thingie, i think it was 3GB VRAM?
RAM: 8GB DDR3
Resolution: 1920x1080
OS: Windows 7 Home Premium 64Bit
HDD: some random old 500GB one, dont have enough space for this game on my SSD so i didnt to the Benchmark on it either (darn you WoW!)
Result: (Maximum Settings, boarderless Window)
Catalyst 14.9:
8961 "Extremely High" @1920x1080 DX11, 68fps
11kish "Extremely High" @1920x1080 DX9, 102fps
Catalyst 14.12:
around 8910 "Extremely HIgh" @1920x1080 DX11, 68fps
didnt try DX9 yet, will update my post or repost as soon as i'm home.
EDIT: loading time was around 46sec