The 120mm PWM fan spins at 2200-1000RPM and draws power from a standard 4-pin PWM motherboard fan header. It is backwards compatible with 3-pin connectors. Each of the three copper heatpipes are 8mm in diameter and extend from the base up to the top of the 159mm tall heatsink. Each ceramic coated aluminum fin measures 0.4mm thick and is spaced 2.0mm apart.

The Xigmatek Dark Knight SD1283 Night Hawk Ed. heatsink stands 159mm tall, the fin stack is 112x120x70mm in size with the bottom fin elevated 36mm above the CPU socket. Heat pipes are spaced 3mm apart at the base plate and where they intersect the aluminum cooling fins. The base incorporates an 11mm thick aluminum section to provide support for clamping. Notice the closed off strip along the side of the fin stack; this curved bit creates a duct to direct airflow towards the heatpipes.

The base of the heatsink is 35x40mm in size. Looking from the top down we can see the large v-shape cut outs on either side of the fin tower, located directly behind the fan motor. This area typically sees little airflow so it tends to be opened up to prevent air stagnation. The fan plenum ranges from 5-17mm as a result. Heatpipes are positioned in the path of highest airflow and rubber mounts are used to hold the fan in place.