Intel Socket FCLGA3647 Narrow ILM 80x15mm Aluminum PWM Blower Fan, Copper skiving heatsink for 1U Server up to CPU power 165 Watts. PU Support Intel CPU Socket FCLGA3647 Solution 1U Server and Up Dimensions 107.0 x 80.5 x 28.0 mm Weight 460 g Material Copper 1100 with Skived Fins Fan Dimension 80 x 15 mm Speed At Duty Cycle 20%: 1000 ± 200 RPM At Duty Cycle 50%: 4000 ± 10% RPM At Duty Cycle 100%: 7000 ± 10% RPM Rated Voltage 12V Bearing 2 Ball Bearing Power At Duty Cycle 20%: 0.60 W At Duty Cycle 50%: 3.84 W At Duty Cycle 100%: 19.2 W Air Flow At Duty Cycle 20%: 3.0 CFM At Duty Cycle 50%: 12.0 CFM At Duty Cycle 100%: 21.0 CFM Noise Level At Duty Cycle 20%: 16 dBA At Duty Cycle 50%: 44.9 dBA At Duty Cycle 100%: 57.1 dBA Air Pressure At Duty Cycle 20%: 1.5 mm-H2O At Duty Cycle 50%: 23.2 mm-H2O At Duty Cycle 100%: 70.9 mm-H2O Lead Wire Pin Out Lead Wire Pin Out Pin1- (-) Pin2- (+) Pin3- (Techometer/Signal output) Pin4- (PWM) Thermal Grease Shin-Etsu 7762 Pre-printed