Experience Optimal Static Pressure with ACFAN00197A 140mm PWM PST Fan Pressure-optimised 140mm Fan for Maximum Efficiency Are you looking for a fan that combines maximum cooling efficiency with low noise levels? Look no further than the ACFAN00197A 140mm PWM PST fan. This pressure-optimised fan offers an extremely efficient cooling performance, even during increased air resistance. Therefore, it makes an excellent choice for heatsinks and radiators. More Efficient and Quieter Technology The ACFAN00197A 140mm PWM PST fan is equipped with the latest generation of Neodym-Iron-Boron-Magnet rings, allowing it to run much more efficiently and quietly than its predecessors. This saves both energy and lowers the coil temperature, ensuring performance won't be compromised. Longer Service Life with Reduced Vibration Thanks to the sinus-magnetizing of the motor, the ACFAN00197A 140mm PWM PST fan produces minimal vibration and the operating sound is hardly noticeable at low speeds. As a result, the motor torque is steady and smooth, making for an extended service life and no need for rubber spacers. 200 to 1700 RPM Regulated Via PWM PST The ACFAN00197A 140mm PWM PST fan speed can be regulated using the PWM Sharing Technology (PST) for maximum cooling performance and minimum noise. With a range of 200 to 1700 RPM and two way installation (push or pull warm/cool air), this fan is ready for whatever you throw its way.