It manages the rotational speed of the electric fan. As the name suggests, fan controller software can be employed if you wish to control the speed of your PC fan. We now know what makes a system turn on its fan. But the sensors cannot regulate the speed of the computer fan. 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.

How to Recover Deleted Data from PC & Hard DrivesĪ heat sink passes on the heat generated by an electronic to a fluid medium (a liquid coolant or air).

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The function of a computer fan is to maintain or lower the overall temperature of the internal components of a computer’s CPU. A COMPUTER FAN, present inside the CPU of a PC, is a hardware component used for active cooling.

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