With today’s cooling systems I’m not sure how beneficial or necessary this really is, however it’s pretty cool a PC Air Conditioner by Manhattan.

It fits into one of your spare 5 ¼” drive bays and promises to lower the temperature of your system by up to 16° F. It’s also pretty much silent (noise level 26 dBA).

So if your monster PC just isn’t cool enough you can get one of these for just under $50 from Think Geek.