I have 2x6800gts and a venice 3200 pretty sure most of my heat comes from the gpus. what h20 setup is easiest and most effective for a first timer. i recently had "issues" while in the middle of a tournament match and don't want that to happen again. kind of hard to shoot when u only see half the screen due to I don't know what it was but once I downclocked the gpu and cpu it went away.