tlarkin said:
I bet a mini fridge is probably cheaper, hell I see those things on sale at Target for like 40 bucks sometimes. You could just toss a frame in a mini fridge, then drill a few holes in it for wiring, and voila, you have a cooled computer.
This has been discussed many times on this forum. Put in simple terms, a typical large refrigerator uses about 52[kW-hr] per year, which works out to about 6[W] average electrical load (quite a bit less for mini-fridges) and, with a COP of about 3, a 18[W] heat load (and that's including the freezer). Throw in a computer which is producing 100+[W] continuously and you can see why this isn't a good idea. If the compressor can keep up at all, it will likely be running continuously, and it isn't designed to do that.
For the initial post, yeah most things can be done better and cheaper than commercial products as long you have a little knowledge.