CPU Socket: Socket 2011, Narrow ILM, (Mounting pitch: 56 x 94mm). CPU Support: Intel Sandy Bridge Romley-EP/EX Narrow ILM Processors up to TDP 150 Watts. Solution: 2U Solution. Overall Dimension: 102.0 x 70.0 x 67.0 mm. Weight: 660 g. Material Copper: Heatsink with Stacked Fins. Fan Dimension: 60 x 60 x 28 mm. * Bearing: 2 Ball Bearing. Rated Voltage: 12 V. * Speed: At Duty Cycle 20%: 1500 RPM, At Duty Cycle 50%: 3500 RPM, At Duty Cycle 100%: 7000 RPM, * Power: At Duty Cycle 20%: 0.6 W, At Duty Cycle 50%: 2.16 W, At Duty Cycle 100%: 7.2 W, Air Flow: At Duty Cycle 20%: 8.8 CFM, At Duty Cycle 50%: 20.3 CFM, At Duty Cycle 100%: 40.5 CFM, Noise Level: At Duty Cycle 20%: 16.0 dBA, At Duty Cycle 50%: 32.9 dBA, At Duty Cycle 100%: 47.5 dBA, Air Pressure: At Duty Cycle 20%: 0.7 mm-H2O, At Duty Cycle 50%: 3.6 mm-H2O, At Duty Cycle 100%: 14.3 mm-H2O, * Lead Wire Pin Out: Pin1- (-), Pin2- (+), Pin3- (Techometer/Signal output), Pin4- (PWM).