Automatic Fan Speed Control feature included in the Ultra Quiet 110mm PWM(Pulse Width Modulation) enabled fan100% copper heatsink with aerodynamically optimized tunnel design for maximum cooling efficiencyInnovative, patented, figure 8 heatpipe design for a heat transfer capacity of up to six heatpipes with the use of just three0.2mm ultra-slim fins for minimized weight and reduced airflow resistanceSuper Thermal Grease (ZM-STG1) included