Construction and design

Construction

The Noctua NH-U9B mainly consits of aluminium and copper. The groundplate is made of copper and coted with nickel as well as the heatpipes of which you'll find four. Totally you'll count 37 aluminium fins which are ventilated by a 92 mm fan which does 1750 rpm at maximum.

The very good manufacturing process shows when you take for example a closer look at the heatpipes which have a small bending radius and they aren't squeezed or anything like this at all.

Design

The fins got a special structure to enlarge the cooling area and improve the airflow. Also they are connected with eachother. This helps improving stability as well as airflow again.

The 92 mm fan comes with a very unique fin desing. On the edge of every single rotor blade you'll find cuttings to improve cooling capacity as well as reducing noise level. If you drive the cooler at 12 volts it rotates with 1750 rpm and we call it subjectively audible. If you do so with only 6 Volts the fan is subjectively silent.