BeQuiet's Dark Rock 3 heatsink ships with a 135mm PWM on the front that rotates at 1400-900RPM. The 159mm tall heatsink incorporates six 6mm diameter copper heatpipes which are grouped towards the outside edges of the ~103mm tall fin stack. The dark nickel plated aluminum measure 0.3mm thick and are spaced ~2.0mm apart. The bottom-most fin is elevated 41mm above the base for motherboard clearance.

The intake fan is 135mm diameter, an exhaust fan can be added if desired (not included). The heat pipes are soldered to a 2-5mm thick copper heatspreader and swaged into the aluminum cooling fins. The wire fan clips stick out 4mm beyond the fins on each side.

The top of the heatsink is capped with a simple aluminum extrusion. The dark nickel plated copper base plate on the Dark Rock 3 heatsink measures 40x43mm in size. Note the large dimples on the aluminum fins.