Brand ARCTIC, Model ACFAN00289A Voltage 12 Volts, Wattage 3.48 watts, Compatible Devices Desktop, Noise Level 0.6 Sones, Maximum Rotational Speed 2500 RPM, DUAL BALL BEARINGS: The P12 Max offers a long service life, high performance and remarkably silent ball bearing. Fans with slide bearings do not have the physically related bearing noise. Therefore, the particularly quiet alternative is the ARCTIC P12 PWM PST, DESIGNED FOR PERFORMANCE: Due to the high static pressure, the fan guarantees efficient cooling even with increased air resistance. Suitable for use on heat sinks & radiators, WIDE RPM RANGE: Thanks to the 4-pin connector, the speed can be controlled via PWM. Below 5 % PWM the fan stands still, above 5 % it is infinitely variable between 200-3300 rpm, PROVEN FAN DESIGN: The closed ring fan wheel enables low-vibration rotation at high speeds and strong resistances while maintaining high static pressure, OUTSTANDING PERFORMANCE: Most powerful 120 mm fan, 25 years of experience,