The CPU fan, also known as the cooling fan, is a fan used to dissipate heat for the CPU. It is provided to the radiator and the chassis. It uses them to quickly conduct the heat of the CPU and blow it into the nearby air to cool down. . The quality of the cooling effect is directly related to the quality of the CPU cooling fan and heat sink. There are many types of CPU fans depending on the installation size, bearing type, number of blades, etc.