CoolerMaster Active Heatsink with 70mm fan for Sockets 754/939/940

Specifications: CPU Type: AMD Athlon64, AMD Athlon X2 (Dual Core), AMD Opteron (Dual Core) Supported CPU Frequency: Athlon64 up to 2.6 FSB 2000/1800 MHz, Athlon64 X2 up to 2.4 FSB 2000 MHz, Opteron up to 2.4. Socket Type: 754/939/940 Heat Sink: Copper Base Skived Fin Cooler Dimensions: 98 x 74 x 26mm Fastener: Screw & Spring Fan Dimension: 70 x 70 x 15mm Fan Speed: 5400rpm Fan Airflow: 8.9cfm Fan Bearing Type: Dual Ball Bearing Voltage Rating: 12 V Noise Level: 40 dBa Connector: 4 pin with PWM function Thermal Resistence: Athlon64: 0.23 °C/W at 27 CFM. Athlon64: 0.23 °C/W at 27 CFM. Opteron: 0.27°C/W at 27 CFM. Santa Rosa: 0.24 °C/W at 27 CFM.