Fractal design venturi hf 14 140mm computer cooling fan the venturi high flow series fans hf 12 and hf 14 are optimized for low restriction airflow environments making them an excellent choice for computer case fans or other low restriction usage scenarios designed with a variety of performance increasing and noise reducing features these fans can move an amazing amount of air compared to other fans at the same minimal noise level the hf 14 comes with two sets of solid vibration dampe