The Cryorig GF120 Silent Series pushes ultra low RPM speeds of up from 200-1000RPM with a minimum noise level of 5dBA - almost virtually inaudible inside a PC chassis, while still pushing airflow. Ideal for midnight gamers or audiophiles who need near silence but still keeping their system cool and stable. The QF120 Silent features four pin Pulse Width Modification (PWM) spin control, fine tuned through your main-board bios settings. With built in Acoustic Vibration Absorbers to soak up unwanted noise, every QF120 fan is ready for low noise operation right out of the box. This 120mm fan only makes up to 19dBA of noise at 1000RPM while pushing up to 44 CFM.