i5 2500k - $220
Motherboard - $100-150
Power supply - $70-90
RAM - $30
Hard drive - $90
Case - $50-100
Windows 7 - $100
$660-780 without a video card.
Just a rough estimate of what it would cost. (I'm trying to study but distracting myself with this, no time to look up specifics..) I would say go the AMD route and get a better video card rather than getting the expensive CPU and choosing a lower video card.