Cpu Fan Pwm

Cpu fan control is one of the best ways to make your pc run better cooler and quieter.

Hunter fan company. In my opinion i would say all cpu cooler fans are pwm controlled. Ground 12 v sense control. Firstly make sure that you fans are pwm controller you can check this by making sure that your fan connector has 4 wires.

They use an integrated circuit to control the speed of a fan or pump. When the temperature reaches 700c the fans will speed up to 100 duty cycle. The pc communicates with the arduino via the serial port.

Some cpu fans can be quite loud and annoying when running at 100 but when using pwm the fan is running quieter unless the cpu gets very hot thus cutting down on noise and. Control cpu fan in the bios. A pwm capable fan is usually connected to a 4 pin connector pinout.

The system works by an application running on the pc checking the cpu temperature and checking whether to speed up or slow down the fans. 4 pin pwm pulse width modulation can be dynamically controlled by software and hardware very easily. In the gigabyte easytune example given above the pwm profile is set to run the fans on about 55 of speed when the cpu temperature is 600c or lower.

The main reason is to cut down on noise from the fan when the cpu is not very hot and to save electricity. How to connect it. The sense pin is used to relay the rotation speed of the fan and the control pin is an open drain or open collector output which requires a pull up to 5 v or 33 v in.

Pwm stands for pulse width modulation.