Mines from Cyberpower and its a beast. Though I ordered it pretty bare bones and finished the rest of it myself. (cause handling processors makes me nervous...) So I ordered mine with no os, no video card (I had one to put in it and have upgraded since then as well) no keyboard and no mouse. So all together I spent 600 and got a I7-920, 6 gigs of ram (ive gone up to 9 since then) a 500g hd, a 64g ssd, liquid cooling, and a pretty sweet case. Now my machine is 2 years old now though. But still that should give you a reference sean3.
tldr cyberpower or ibuypower will hook you up with a monster for 2g or less easy.