The two most critical components in a gaming PC, the CPU and the graphics card, generate a lot of waste heat that needs to be removed from the case. Water is a much better conductor of heat energy that air, so watercooling your PC could make it cooler, quieter and potentially allow you to overclock components further. This category encompasses all types of watercooling from all the individual components required to build a watercooling loop, including blocks, pumps, reservoirs, radiators, fans, tubing and different coloured fluids plus complete kits.