Quote:
Originally Posted by
OneTreeHillÂ

By the way I noticed just now.The cpu fan 3 pin and pwm adapter comes in the box.Adapter does it work?Is it theoretically possible, 3 pin to pwm fan?
Yes and Yes.
PWM fans have PWM circuitry in them. Phanteks PWM adapter has that circuitry in it. 3pin fan is 12+, earth and rpm. PWM fan is 12+, earth, rpm and PWM.
Fan sends rpm signal to motherboard, motherboard determines and sends PWM signal to fan PWM circuitry which triggers 12v pulse to fan motor. Speed and length of pulse determines the fan rpm.