4x Direct Contact Heat-pipes, recommend for Intel® Xeon ® Platinum / Gold / Silver/ Bronze Family Processor (formerly Cascade Lake, Skylake), Socket FCLGA 3647 Square ILM, Active Cooler for 2U Server and up, 60x60x25 mm PWM Fan, Aluminum heatsink with heat pipe embedded, Support CPU power up to 205 Watts heat dissipation.