A5LG Processor AMD® Next Generation Opteron Socket F 1207 3.5" Mounting Pitch Socket F 1207 Type Active Use 2U Server & up Material Copper & Aluminium fins with heatpipes embedded Rated voltage 12 V Overall dimension 100,0 x 77,2 x 63,0 mm Weight 425g Fan dimension 77 x 77 x 20 mm Fan speed 4500 rpm Bearing 2x ball Power 6,0 W Air flow 45,558 cfm Noise level 45,80 dBA Air pressure 0,148 inch-H2O Lead wire pin out 3pin Backplate is not included Tyan Socket F 1207 motherboards for 3.5" mounting pitch : S2915, S2927, S2932, S3970G2NR, S3970G2N-U, S3992 and S4985 + M4985.