What is start PWM value?

SMART Fan start PWM Value = PWM % at idle temperatures (eg setting to 40 would mean a PWM value of 40%), the higher the value the faster the fan spins. SMART Fan Start Temp = The ceiling for idle, anything higher and the fan will start to speed up.

What is fan start PWM?

Pulse width modulation (PWM) fans are DC fans with an extra wire for PWM. PWM fans are 4-pin fans where the fourth wire sends a PWM signal to the fan motor. The PWM signal is the control input of the PWM fan. The control input is usually an open-drain or open-collector output with a 5 V or 3.3 V pull-up.

What does PWM stand for?

pulse width modulation “PWM” stems from electrical engineering and is short for “pulse width modulation”, which is also known as “pulse-duration modulation”. What it means is that you can use it to almost freely control the RPM of a fan. The speed of regular fans can be modified by voltage regulation.

What is PWM fan control?

PWM stands for pulse width modulation. PWM fans and/or pumps are found in some CPU coolers and GPU (aka graphics card) coolers. They use an integrated circuit to control the speed of a fan or pump and, therefore, how much cooling it's providing to the CPU or GPU. … Note, older fans may use 3-pin connectors.

What is PWM fan Reddit?

PWM stands for pulse width modulation. In short, it's a signal the header sends to the fan to tell it how fast to spin. Otherwise, the other 3 pins are identical to 3 pin fans (Ground, 12V, and tach). 3 pins fans can still be regulated via voltage regulation.