Low-noise 92mm PWM Control fan for automatic control of the fan RPM according to CPU temperatureOptimized heatsink layout composed of pure copper for maximum heatsink efficiencyInnovative, patented, and curved heatpipe design for a heat transfer capacity of up to six heatpipes with just three0.2mm ultra-slim fins for minimized weight and reduced airflow resistanceMaintains minimum RPM even when Duty signal supplied by M/B is below 30%Operates in silence by preventing extreme RPM during initial booting