Noctua nf p12 pwm 120mm cooling fan the new nf p12 pwm fan from noctua takes the very popular nf p12 fan and adds pwm functionality to allow automatic fan speed adjustment features proven nf p12 design pressure optimised nine blade design vortex control notches custom designed pwm ic with scd low noise adaptor specifically conceived for pressure demanding applications such as cpu cooling the classic nf p12 120mm fan helped to found noctuas reputation as a top tier manufacturer of pr