This is one of the best DIY hacks in some time, and perhaps the strangest way to keep a PC running cool and quiet. Contrary to what every one thinks, this hack doesn't need you to install a large number of fans or a liquid cooling unit. All you need is a custom sealed PC case filled with cooking oil (about 8 gallons) and a lot of siliicon glue and patience. Yes, your PC will look like an oil filled aquarium at the end of the day and we doubt if you can re-use the oil for cooking, but you won't need any fans and your PC should be silent as a dumpling ;)