
Thanks to the sensors in the motherboard. It’s all awesome that the computer can sense on its own that the internal components are heating up and that they all need to be cooled down.

If you’re wondering how the computer knows when to turn on the fan, there are sensors on the motherboard that turn on the fan(s) when reaching a critical temperature. The fan achieves it by drawing cooler air into the case from the outside and expelling the warm air from inside, along with moving the air across a heat sink to bring down the temperature of a particular component.

A COMPUTER FAN, present inside the CPU of a PC, is a hardware component used for active cooling.
