• For 1U Rackmount sever / P4 Socket 478 up to 2.8G. • Heatsink made by copper Overall Dimension : 83.2 x 77 x 25 mm DC Fan Size : 60 x 60 x 10 mm Base Material : copper Bearing Type : SA/CA/BA/ELA Speed : 4800±10% RPM Noise Level : <32 dBA Max Air flow : 20.26 CFM Rated Voltage : 12 V