So you want quiet. Heres what I have in a quiet H2o rig. I have an old Maze2 water block 1/2", 1/2" hose, Eheim 1250 pump, 5gal. reservoir, thats it! No radiator, one case fan for a RAID setup, its a 92mm, plus the Enermax psu fans. This setup is very quiet. If I used only one drive, I could eliminate this fan also. This is not a good setup for extreme oc'ing. Moderate oc'ing and quiet is the name of this game!