See the Corvalent experiment which tests liquid submersion cooling on a computer with astounding results
This is a video of an engineering experiment conducted by embedded cooling company Corvalent. It cools a computer by completely submerging it in liquid. This liquid submersion cooling system is NOT using mineral oil, or any type of oil cooling. This experiment was done using a chemical made by 3M called Novec 7000. It has a low boiling point, and leaves no residue or any trace whatsoever behind on the motherboard. The board was equipped with an i3 processor, running at 100% load.