By Evan Ackerman
We’ve all got an old fish tank lying around in the garage from our childhood, and Puget Systems has a pretty good idea of what can be with it. They’re selling a complete DIY kit to submerge your entire computer (except for the drives, of course) in a fish tank full of mineral oil. Since mineral oil is non-conductive to electricity but a good conductor of heat, it makes for a much better cooling solution than air, allowing you to overlock your hardware to the maxxx… A backpack of sorts pumps the oil past a bunch of fans to transfer heat out of the tank.
You can get other liquid cooling systems that are a little bit more integrated into a case, but then you have to worry about leakage and stuff, and anyway, it’s far less dramatic. The tank with the external cooling system will run you about $290; you provide your own fish tank, aquarium rocks, and bubbler. You can also get the system with a tank for about $500.