What's the function of that small fan in the computer mainframe?

1, the role of the small fan in the computer host is to dissipate heat. Because it is in the host, it is mainly to cool the CPU. Excessive CPU temperature will affect the normal operation of the computer. In addition, desktop computers have fans. Another fan is used to cool the chassis.

2, generally used for heat dissipation. Provide radiator and chassis. Computer fans are divided into chassis fans and cpu fans. The chassis fan is installed on the computer chassis to dissipate heat for the whole internal space of the computer chassis, while the cpu fan is mainly installed on the cpu processor and mainly relies on the cpu to dissipate heat. It's usually something that buzzes as soon as the computer starts.

3, it is called a fan, because the size of the heat sink is different, so the fan is different, and the radiator fan is also small, just to dissipate heat.

Fans on all household appliances are generally used for ventilation and heat dissipation. Electric fans can ventilate the room and make people feel cool. The fan of the range hood exhausts the kitchen fume. Fans of various electrical equipment dissipate heat by themselves. The fan of the computer host is also used to dissipate heat for itself.