BeQuiet's Dark Rock Pro 3 heatsink ships with a 120mm PWM on the front that rotates at ~2000RPM and a 135mm PWM in the center that operates at 1400RPM. Both fans are powered from one 4-pin fan header. The 163mm tall DRP3 heatsink incorporates seven 6mm diameter copper heatpipes which are grouped towards the outside edges of the ~110mm tall fin stacks. The dark nickel plated aluminum measure 0.3mm thick and are spaced 2.0mm apart. The bottom-most fin is elevated 39mm above the base for motherboard clearance.

The intake fan is 120mm diameter, the second fan is 135mm diameter. A third (exhaust) fan can be added if desired. The seven copper heat pipes are soldered to a 1.3-4mm thick copper heatspreader and swaged into the aluminum cooling fins. The wire fan clips extend 5mm beyond the fins on each side, so take that into consideration when measuring clearances.

The dark nickel plated copper base plate on the Dark Rock Pro 3 heatsink measures 40x45mm in size. The top of the heatsink is capped with an aluminum extrusion that holds the two fin stacks firmly in place. Note the dimples on the aluminum fins and how the heatpipes gravitate towards the outside corner in the photo at right.