The ph f140mp 140mm high static pressure premium fans from phanteks is designed with the maelstrm concept technology the fans have pwm built in creating less cables which allows users to make speed adjustments from 500 1600rpm the ph f140mp a high static pressure fan can have the ability to overcome the airflow restriction caused by high fin density phf140mp produces high static air pressure allowing for a direct and focused airflow making them ideal for the densely packed fins of a radi