i have the HD 7850 2GB,8GB ram and I5 3450.
gettin around 60+- with texture res to high,game effect very high objects high,everything else on lowest possible AF on 16X,no AA.
to be honest iam kinda disappointed,thought i will be able to run it on very high with no aa and above 60 FPS,but iam on high and sometimes it drops below 60FPS.