CPU, motherboard, ram, hard drive, video card, case, power supply, cooling, cd/dvd, etc, monitor and your other shit like mouse/keyboard.
bare in mind not all parts are compatible with other parts so it's not as easy as it looks
well the idea behind it is you can build a PC equivalent to or better than a store bought PC for less money
often times though you end up spending more money for a way better machine.
$2000 will get you 8gb of insane dominator gaming ram and 2gb gddr5 dedicated video memory not to mention a sick ass tower, 850w power supply, and a hi def monitor. i mean, yea.... oh and a SSD drive instead of a typical HD
this would all be on a 3.2ghz (overclock capable) quad or higher machine
That is pretty awesome, I have always wanted to do this but have never been able to get enough people to do it. Maybe once I get my capture card and start streaming mw2 for like 10 months Ill have quite a bit of followers. Then I can show them whats up.