Cooler Master DI4-7H53D Socket-478 up to 2.8GHzSocket Type : Intel P4 / 478Heat Sink Dimension : 83x68.5x37 mmHeat Sink Material : AluminumFan Dimension : 70x70x15 mmFan Speed : 2800 rpmFan Airflow : 23.38 CFMFan Air Pressure : 2.9 mm H2OFan Life Expectance : 30,000 hrsBearing Type : One Ball One Sleeve BearingVoltage Rating : 12 VNoise Level : 31 dBAConnector : 3 Pin (Speed Detection)Weight 296 gThermal Resistance : Rca 0.43/WApplication : Intel Pentium / Celeron Socket 478 Pin 2.8 GHz