Dynatron Cooling Fan/Heatsink K17 CPU Support: Intel Xeon Server Processor E3 Series Core i3 i5 & i7 Desktop Processors & Pentium Desktop Processors CPU Socket: 1155/1156/1150 Solution: 3U&Up & Workstation Solution Overall Dimension: 91.0 x 91.0 x 110.0 mm Weight: 530 g Material: Aluminum Fins 4x Heat Pipes with H.C.C. Technology Fan Dimension: 92 x 25 mm Bearing: 2 Ball Bearing