so i have a computer with an LGA775 socket motherboard and want to ugrade it as much as possible, i just bought an intel qx6800 2.93ghz quad core processor for it, have 4 gigs of 1066mhz memory on the way. still have to buy a PSU and video card. my main question is, i would like to get into an Nvidia 6 series gfx card for this build but dont want to over do it and bottleneck the cpu. was wondering what is the best new nvidia offering i could get without bottlenecking cpu and thus wasting money, obviously a 680 is out of the question, was thinking maby a 670 or 660 perhaps? not too sure on this one, maby someone can inlightin me on this quest that im on.