If you move the heat away from a small area quickly, you can easily spread the heat out into a MUCH bigger radiator which will cool more efficiently with air. A

If you move the heat away from a small area quickly, you can easily spread the heat out into a MUCH bigger radiator which will cool more efficiently with air. A nice water cooling loop effectively increases the radiating surface area, with a nice side effect that it moves the heat further away from the rest of the computer.