The 120mm fan on the Titan TTC-NK85TZ Fenrir heatsink spins at 2200RPM by default. The PWM fan can drop down to 800RPM if quieter operation is desired, a resistor is also supplied to reduce fan speed in non-PWM equipped motherboards. A standard 4-pin PWM motherboard header provides power. The slot in the base is for the multi-socket mounting bracket.

Titan's Fenrir heatsink stands 156mm tall. Its raw aluminum fins are press-fit over four 8mm diameter copper heat pipes lined in a row. The bottom fin is elevated 37mm for adequate motherboard component clearance. The aluminum fins measure 0.3mm thick and are spaced 2.0mm apart. The aluminum/heatpipe base is 13mm thick.

The base of the Titan TTC-NK85TZ Fenrir heatsink is machined flat, which is always preferable to polishing or sanding steps that can take a base "out of flat." The aluminum and copper heatpipe base has a foot print of 49x46mm. Four 8mm diameter U-shaped copper heatpipes run the full height of the 156mm tall heatsink. Only one fan can be attached to the Fenrir heatsink using the supplied wire clips.