Deepcool THETA 21 PWM Socket 1155/1156 Aluminum Heat Sink & 3.62" Fan w/4-Pin Connector for Intel up to 95W Deepcool THETA 21 Heat Sink and Fan General Features: Radial aluminum heat sink 3.62-inch (92 x 92 x 25 mm) Hydro Bearing fan with PWM function (Pulse Width Modulation) Easy installation with push pins 7-inch 4-pin power connector Lead-free Specifications: Fan Speed: 900 150 ~ 2400 10% RPM Maximum Air Flow: 44.25 CFM Rated Voltage: 12 VDC Started Voltage: 7 VDC