To keep the computer cool while it's running at full speed, Hardcore Computer immersed the Reactor Extreme's motherboard, including the microprocessors and other chips, in four and a half gallons of Core Coolant. That's the wet side of the PC, and it's protected by a clear plastic casing made from the same material used in visors worn by astronauts in outer space.

A radiator designed for the Reactor Extreme sits behind the motherboard on the dry side of the PC.

Attlesey said the coolant is being reviewed for use in a few enterprise systems and the company hopes to find more customers in the server market for the liquid.