Thanks- but why are there three "barbs" on most blocks? Don't you just need two? If so what is the third one for? Extra? For whatever reason?
Okay, also- what do you think of this waterblock:
Notice that is JUST a water-block, not an "all-in-one" solution. According to their site I should be able to hook it up to any pump and radiator. Would that be overkill? Unnecessary?