Soquete: INTEL LGA 775/1150/1151/1155/1156 Fan: 2500± 10%RPM, 45-55 CFM. 0.28A12VDC, 20dB,90*90*25mmHeatsink Material: Aluminum (or copper center) Heatsink weight: 100g ±10g or as required Bearing Type: Sleeve/ ball/ liquid for option Packing: Normal box or collor box carton Color box size: 10*11*7.5cm