W0ef my system is an i7 2600K Cruising @ 4.8 GHZ. 8 GB Ram 2000 and 6950 2GB ( unlocked )
I just installed it and go i didn't yet tweaked it.. coming from NVidia SLI system i have a quick learning to do.. My second 6950 is coming this week.
The sim run actually very very smooth for me right now .. 1920x1200..