Dynatron G785 Socket 1366 Active Xeon 5500 2u CPU Cooler CPU Socket: 1366. CPU Support: Intel Xeon 5500 Series Nehalem EP Processor E5540, E5530, E5520, E5506, E5504, E5502, L5520, L5506, L5518, L5508, L5508, L5518. Solution: 2U & Up. Overall Dimension: 90.0 x 90.0 x 61.8 mm. Weight: 470 g. Material: Aluminum Radial Fin Heatsink with Copper Inserted. Fan Dimension: 77 x 77 x 20 mm. Speed: At Duty Cycle 0~20%: 1000 RPM. At Duty Cycle 50%: 2500 RPM. At Duty Cycle 100%: 4500 RPM. Bearing: 2 Ball Bearing. Bearing: 2 Ball Bearing. Rated Voltage: 12 V. Power: At Duty Cycle 0~20%: 0.84 W. At Duty Cycle 50%: 1.44 W. At Duty Cycle 100%: 6.0 W. Air Flow: At Duty Cycle 0~20%: 10.12 CFM. At Duty Cycle 50%: 25.30 CFM. At Duty Cycle 100%: 45.56 CFM. Noise Level: At Duty Cycle 0~20%: 13.14 dBA. At Duty Cycle 50%: 33.04 dBA. At Duty Cycle 100%: 45.8 dBA. Lead Wire Pin Out: Pin1-Black (-). Pin2-Yellow (+). Pin3-Green (Techometer/Signal output). Pin4-Blue (PWM). Note: 1. RoHS Compliance. 2. Universal Mounting Retention for Socket 1366 and Socket 1156(Factory default setup is socket 1366 mounting). 3. Thermal Grease Pre-Printed with TIG830SP.