Measuring just 125x95x68 mm, the U9S heatsink is small in comparison to Noctua’s renowned lineup of high end coolers. Nevertheless, this cooler still retains the quality materials from its counterparts – aluminium fins with soldered joints and nickel plating.

This fin-stack is condensed and follows a curved but symmetrical contour.


Running through from the baseplate, through the fins are a total of five copper heatpipes. At the top the tips of these heatpipes are clearly visible – along with the engraved logo of Noctua.

The baseplate which has direct contact with the CPU, is constructed of copper and has a fully reflective and mirror-like finish. Noctua has pre-attached the mounting screws and respective tension springs which is a huge benefit, making the task of installing much easier.


Noctua supply fan clips to attach 92mm cooling fans to the heatsink. The NF-A9 is simply attached by looping the clip through the mounting hole and fitting the clasp behind the fin indented fin stack. In less than a minute a fan can be attached to the heatsink.