I'd agree with the others assessment on the processor... the new ivy bridge processors are the current way to go.
I'd only differ on the video card only because of personal preference. I'd argue that this card is approx as good as the nvidia suggested above.
http://www.newegg.com/Product/Produc...82E16814102987
my reason? the eyefinity capability.
i use 2 of these video cards in crossfire with eyefinity across 3 X 24' monitors.. giving me a virtual screen at 5750 x 1080 across 3 screens
here is an example on youtube