Q. What exactly does a computer fan do?

Answer

Fans are used to suck in outside air, push out hot air, and move air across a heat sink to cool an individual component. There are three possible functions for a computer fan. To begin with, it has the ability to draw air from the outside and into the computer casing, where it can be cooled. Also, it can expel the hot air from inside the computer by pushing it out. Last but not least, it can cool the CPU by circulating air across a heat sink (CPU). A heat sink is a part designed to take up excess heat and release it elsewhere. The cooling system's fan and heat sink can be seen as a dynamic duo in this configuration.