product : + asus cooler silent knight ii for 3 in 1 asus cooler silent knight ii cpu support : intel core2 extreme/ core2 quad (quad-core); intel core2 duo/ pentium dual core/ pentium d (dual-core); intel pentium 4 ht/celeron d, amd athlon 64 fx, amd athlon 64 x2, amd athlon 64, amd phenom fx/x3/x4, amd sempron cpu socket : intel lga 775, amd 754/939/940, amd am2/am2+/socket f(1207)/1207+ heatsink material : cu. base + cu. fins + 6 x 6mm copper heat pipes fan : dimension : 92 x 92 x 25 mm bearing type : sleeve connector : 4 pin with pwm control speed : 2300 rpm 10% max. airflow : 45.6 cfm max. air pressure : 2.325 mm-h2o dimensions (h x w x l) : 140 x 110 x 115 mm weight : 610 g