Right now I have a E8400(3.0) not overclocked because I"m not very good at it. I have a Q9550 that I have now and am thinking about putting the Q9550(2.83) in when I install Win 7 RTM, right now I"m using Win 7 RC and really liking it. What difference would the 200 MHz make in non-overclocked performance game wise because that is what I mainly use my computer for.