This game isn't too demanding. My system is decent, but not badass and I can play it with all the details on high and not get a stutter. On FFXI I ran it with 1280x1280 textures, 16x AF 6xAA and everything set to high and it was solid. That game had a FPS cap at 30 though, so it wasn't hard to get a constant 30fps.
Abit NF7-S Rev2 mobo
AMD Athlon 2500m @2ghz (Haven't tried to get higher since burn in)
512mb ram
ATI 9800Pro 128mb video card