The Cryorig GF120 Balance Series is the ideal solution either as a CPU fan or a system fan with the best RPM range for everyday use. It features low enough speeds to be nearly unnoticeable, but also fast enough to provide essential cooling when it’s needed. Offering a wide range of RPM settings the QF120 Balance Series 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. The 120mm fan makes up to 25dBA of noise at 1600RPM while pushing up to 49 CFM.