Noctua NH-U9S, Premium CPU Cooler with NF-A9 92mm Fan (Brown)

Noctua NH-U9S, Premium CPU Cooler with NF-A9 92mm Fan (Brown) Brand: Noctua Fan Size: 92mm Bearing Type: SSO2 Type: Fan & Heatsinks RPM: 2000 RPM (Standard), 1550 RPM (w/ L.N.A.), 400 RPM (PWM) Air Flow: 46.44 CFM (Standard), 36.84 CFM (w/ U.L.N.A) Noise Level: 22.8 dB(A)/standard, 16.3 dB(A) (w/ U.L.N.A.) Heatsink Material: Copper ( Base and Heat-pipes), Alum.( cooling Fins ), Soldered Joints, Nickel Plated