well are you into OC'ing? if not then it is not worth the money, unless you have a video cardthat naturally run shot.
You can get a pretty good setup for between 200-250 bucks.
with watercooling you need: radiator, pump, water blocks for all components, hose, fittings, clamps etc, a resivor, and additive.
dang you beat me by like 3 mintues