F14 PWM 140 mm PWM Case Fan Features: The Fluid Dynamic Bearing comes with an oil capsule that avoids lubricant leakage. Thus this bearing is as quiet as a sleeve bearing but comes with a significantly higher service life. The PWM function allows the motherboard to run the fan precisely at its necessary speed. This guarantees the required cooling and minimizes the noise level. The ARCTIC F14 PWM fan is well known for high airflow at a comfortable noise level. The real improvement is the motor and controller. Our German engineers made this fan work at lower speed when performance is not needed. Often motherboards don't provide PWM signals below 40 % and thus make PCs unnecessary loud - not so with the F14 PWM. The innovative design of the fan blades improves the air flow and facilitates a highly efficient ventilation. The impeller was designed with a focus on minimzing the noise level yet delivering the desired airflow and pressure. Specifications: Performance Fan Speed: 200 - 1350 rpm Airflow: 74 CFM/ 126 m³/h Static Pressure: 1.6 mm H₂O Noise Level: 0.5 Sone Operating Ambient Temperature: 0 - 40 °C Fan Fan Frame: Standard Control Type: PWM Connector: 4-Pin-Connector Fan Bearing: Fluid Dynamic Bearing Electric Characteristics: Typical Voltage: 12 V DC Starting Voltage: 6 V Current/ Voltage: 0.11 A / 12 V Cable Lenght: 400 mm Size & Weight Lenght: 140 mm Width: 140 mm Height: 27 mm Weight: 180 g