CPU fans (in this form) are just case fans with shorter wires, really. In fact, I'm currently using a CPU fan in the front of my case, and I'm pretty sure I slapped a spare case fan on the heatsink for this one old computer that I'm keeping around for some reason. It's definitely not to measure how Dolphin performs on a sempron 2800+ and an IGP from back when everyone used XP, no siree.
in a perfect world we would all be piles of sand with no ability to form coherent bodies of body
