This socket 478 cooler is designed for Intel Pentium 4 processors supporting 2GHz. It features an aluminum heatsink and ball bearing fan running at 3600 rpm while generating 29.8 CFM and 36.5 dBA. CPU Type: Socket 478 Cooler Type: Heatsink/Fan Noise Rating: 36.5 dBA Airflow: 29.8CFM RPM: 3800 Dimensions: 88 x 76 x 58 mm Heatsink: aluminum