Cooling Unit

There are many ways of cooling a computer, these are unit in order for the components to not overheat and to not destroy themselves. Cooling units are used to keep a computer at operating temperature and to maintain a stable heat. Components are usually designed to generate as little heat as possible in order not to break themselves. There are many types of cooling:

Air cooling is based around fans, this is creating convection currents around the components in order to disperse heat away from it. Fans and heat sinks are usually fitted to CPU's, GPU's, the PSU and hard drives. Cooling using a heat sink is called passive cooling, this involves the heat sink drawing the heat and conducting heat and dispersing it away rather than using a fan. This is silent as there are no moving parts.

Liquid Submersion Cooling, this is submersing the components in a thermal conductive liquid. This liquid isn't electrically conductive so the components don't get shorted out. This method is most often used for cooling large data centers or power transformers rather than computers in the home. The liquid cooling technique most commonly used in personal computers involves flowing liquid over the surface of the components to disperse heat and then pump the liquid away. This is quieter than fans but the pumps still make some noise.

A more uncommon method is liquid nitrogen cooling, this is used for any extremely over clocked or hard working components. this requires a pipe to be places on top of the processor or graphics card, the whole system must then be protected from condensation and then the liquid nitrogen is poured into a pipe. This means that the temperature in this tube is below -100 degrees Celsius. This can only be used over a short space of time before the CPU/GPU will break under the strain of such a low temperature.