you should grab a western digital 640gb
unless you are really concerned for our environment and wants to save money on on electricity bill
you don't really need a 4870x2 for 1680x1050 resolution
you could save some money with like a gtx 280 or hd 4870/gtx 260
I think you forgot ram
prices will probably drop Q1 of 09 when AMD's new proc comes out