Type: Fan & Heatsinks RPM: At Duty Cycle 0%: 1000 RPM At Duty Cycle 20%: 1000 RPM At Duty Cycle 100%: 5500 RPM Air Flow: At Duty Cycle 0%: 8.36 CFM At Duty Cycle 20%: 8.36 CFM At Duty Cycle 100%: 53.899 CFM Noise Level: At Duty Cycle 0%: 20.6 dBA At Duty Cycle 20%: 20.6 dBA At Duty Cycle 100%: 51.4 dBA Power Connector: 4 Pin Color: Black Heatsink Material: Copper Base & Aluminum Fins with Heatpipes embeded Compatibility: LGA 1366