I have a AMD 1100t @ 4.2 and a MSI R6970 Lightning TwinFrozerIII and in BF3 on Ultra Settings at 1920x1080 I average 43+fps.... BF3, Crysis2, and Metro2033 are the only games I average low fps... and 43+fps average really isn't low.
Just giving some real world results to ya, thats all....