no, i barely deal with 45 fps. monitors refresh at 60Hz going half that, 30 fps, will make things look choppy.
using 1366 x 768 instead of 1680x1050 on a 6850, i would expect the frame rate to increase to close to 60.
So would a 6790 do? I wanna get at least 40 FPS max at 1366 x 768!