I'm thinking of running dual monitors on a new build with an amd 720, 4 gb of gskill, and a 4870. The monitor I have now is a 5year old 19" acer I believe (in iraq, can't check) runs at lower resolutions. My question is: what components (ie gpu, psu, etc.) do I need to consider for the kind of multitasking I'm considering. This would include watching tv while surfing web, playing total war, encoding, and other general use. My budget is around 800-1000 US, but it's flexible. Should I be looking at a quad core, possibly an I7, or maybe crossfire or an x2 4870?