water cooling v. fan\heatsink

rickman:

The large size of the radiator would provide lots of
cooling area eliminating the need for a fan. I don't know for sure
how well this would work, but even if it is not cooler than a fan, it
will be nearly silent.

A good quality water pump is nearly silent. If you want to eliminate the
fans, go with an evaporative system like I described to the OP. I don't
believe you will get enough water movement through hoses using convection
to prevent the CPU from overheating. You would need a cylinder of water
sitting atop the CPU and some method, probably a fan, of cooling the water
as it rises.

--
Mac Cool