just had a flashback of overclocking my AMD rigs. My last was an Athlon X2 64 @ 3 GHz. I built it to fold, and had it competing admirably against some Intels on the team.
I ended up having to scale it back to 2.99 GHz (*rolls eyes*) to prevent the northbridge from overheating on the 3rd day of full-throttle after a cold start.
That system's RAM (DDR2-800 overclocked of course) and the CPU were liquid-cooled. It had a variable air-flow 120x120 cm radiator on the back of the case, which fed out to a 120x240 cm radiator a few feet away. It kept the room a constant 80 degrees.
Good times.