Application For CPU: Intel p4 Processeor 550/650(LGA775)up to 3.6GHz or All Intel Celeron D(LGA775)and pentium D 820, Pentium4 EE 3.4GHz Specifications: Fan Sizs:90*90*25mm Speed:1000~3600rpm Bearing:Sleeve\Ball\Closed sleeve Life:10000\30000\20000Hours Heatsink Size:90*90*50mm Heatsink Material:Aluminum 6063+Cu Packing: Gift Box:106*123*106mm Carton:545*540*265mm No.Off/Carton:50PCS