Processor

Is there a way to underclock a processor? I have a P4 3.2ghz, lately it's been getting really hot. It idles around 47c now, when I first got it I could have sworn it was at 38. It has an liquid cooling system. I recently taped a second fan on the other side of the radiator (which brought the temp down to 47ish, when it was at 53c). I used to use the overclocker in the bios to move it up to 3.4ghz, could that have harmed it?

>>6
I'd say the point to liquid cooling is xtreeeeme overclocking that, without liquid cooling, would otherwise require you to turn down the computer room temperature to ungodly low levels to allow for optimum environment temperatures and load a ton of fans into your case.