Specifications: Product Number: R-AK400-WHNNMN-G-1 Product Dimensions: 12797155 mm(LWH) Heatsink Dimensions: 12045152 mm(LWH) Net Weight: 661 g Heatpipe: 6 mm4 pcs Fan Dimensions: 12012025 mm(LWH) Fan Speed: 500~1850 RPM10% Fan Airflow: 66.47 CFM Fan Air Pressure: 2.04 mmAq Fan Noise: 29 dB(A) Fan Connector: 4-pin PWM Bearing Type: Fluid Dynamic Bearing Fan Rated Voltage: 12 VDC Fan Rated Current: 0.13 A Fan Power Consumption: 1.56 W