New Zalman FAN CNPS5X SZ CPU Cooler AMD /Intel PWM Control 92mm Hydraulic Bearing Retail Zalman FAN CNPS5X SZ CPU Cooler AMD /Intel PWM Control 92mm Hydraulic Bearing Retail. Three heatpipes and aluminum fins are designed for maximum cooling while cooler setup quickly expels hot air out of the case. An ultra quiet 92mm fan with Hydraulic bearing is incorporated for minimized noise and excellent cooling. The PWM (Pulse Width Modulation) Fan automatically adjusts fan speed (RPM) according to the CPU's temperature. The cooler is designed with tool-less installation clip, making installation convenient.