Would it really work you think, such a big refrigerator... ?
I fear not... I fear the cpu's nowadays get so hot, they need air flow or another way to remove the heat from around them... it just doesn't go magically away you know ;)
You'll have to come up with a better plan, buster ! ;)
I have a tip for you though:
You could attach your cpu to the front of your prius car, then drive real fast and see what happens ! ;) :)
Bye, Skybuck =D