Well, I must say that I'm really disappointed at this one. When you get water cooling you expect it to be quiet, at least the pump shouldn't be so noisy. But no, this one sounds like someone is drilling a hole in your wall, with default config, hoses, block, radiator I had serious troubles with finishing the tests. When I ran prime 95, I had to go to another room and watch tv or something, because the sound level was so high and annoying.