CPU Heating up

Found out that the beeps that I keep getting (My previous post:Rendering Nightmare) when I'm rendering is actually heat related. Ow must be right. It's because when I turned off my a/c one warm afternoon, the beeps were coming on like crazy everytime I hit render. Then I switched my a/c on again and voila, no more beeps. I'm actually surprised that it made that much difference. Sigh...maybe's it's about time I looked into getting one of them funky water-cooled cooling systems that I always laugh at for my machine.