Swiftech Polaris 120 120mm Hydraumatic High Performance Heat Pipe CPU Heatsink (5) 8mm heat pipes the hottest heat pipes (directly above the CPU) are arranged to receive the maximum amount of air-flow for optimized thermal performance. Fins form wind tunnels for optimum air-flow, resulting in more efficient use of the fan, therefore better cooling. Direct-touch base technology provides an optimized transfer of the heat to the pipes. Relatively compact footprint (Width 135 mm x Depth 91 mm x Height 152 mm including fan) Intel Socket 775, 1155, 1156, 1366, 2011. AMD Socket 754, 939, 940, F, AM2, AM3