ARCTIC F8 Pro PWM Fluid Dynamic Bearing Case Fan, 80mm PWM Speed Control, 33CFM at 22dBA Type: Case Fan Bearing Type: Fluid Dynamic RPM: 700 - 2000 RPM (controlled by PWM) Air Flow: 28 CFM Noise Level: 0.3 Sone Power Connector: 3 / 4 Pin Compatibility: Case Dimensions: 80 x 80 x 34 mm