Features 1.This CPU heatsink has four heat pipes for better and more powerful heat dissipation. 2.It can enhance the cooling capacity of the duct system. 3.The U-shaped heat pipe can quickly transfer heat from the processor and has good heat dissipation performance. 4.The aluminum base is combined with 4 pure copper heat pipes for high efficient heat dissipation. 5.90MM large fan large air volume very quiet. High efficiency and low power consumption. Specification Features:This CPU heatsink has four heat pipes for better and more powerful heat dissipation. It can enhance the cooling capacity of the duct system. The U-shaped heat pipe can quickly transfer heat from the processor and has good heat dissipation performance. The aluminum base is combined with 4 pure copper heat pipes for high efficient heat dissipation. 90MM large fan large air volume very quiet. High efficiency and low power consumption. Specification:Material: Metal + PlasticSpeed: 220010%RPMNoise: 22dBAAir Volume: 48CFMLife: 20000 hoursFan Interface: 3pinBearing Type: HydraulicFan Size: Approx. 9 * 9 * 2.5 cm/ 3.5 * 3.5 * 1.0 inSize: Approx. 13 * 9 * 9 cm/ 5.1 * 3.5 * 3.5 in (overall)Applicable CPU:Small screw + backplane style universal 775 1150 1151 1155 1156 1366 2011 perforated motherboardSmall screw style universal 775 1150 1151 1155 1156 1366 2011 motherboard with backplaneLarge screw style dedicated X79 single channel dual-board main board with basePackage list:1 * Fan Radiator (Small Screw + Backboard Style)1 * Backboard (Small Screw + Backboard Style)1 * Fan Radiator (Small Screw Style)1 * Fan Radiator (Big Screw Style) Package List