Features CPU:Intel P4 LGA775 Up to 3.6HZ for 1U Server Specification Dimension:87mm*83mm* 30.5mm Weight:420g Heatsink Material:Pure copper Dimension:87mmx83mmx15mm Fan Dimension:70mm*70mm*15.5 mm RPM:6000 rpm Ball bearing:2 ball Rated V/A:12 V/0.55A Max CFM:7.4 cfm dBA:46.8 dBA Static pressure:0.592 inch-H2O