DeepCool's Gammaxx S40 heatsink ships with a custom 120mm PWM fan that rides over the top of the cooling fins. The 141mm tall cooler incorporates four nickel plated 6mm diameter copper heatpipes which are exposed at the base to make direct contact with the CPU. Each aluminum fin measures 0.4mm thick and is spaced 2.0mm from the next. The bottom-most fin is elevated 34mm above the base for clearance.

From the side we see four 6mm diameter copper heat pipes set into an 11mm thick aluminum base plate with small extruded cooling fins. The base pate provides support for the mounting brackets which screw into it.

The exposed heatpipes on the base of the Deepcool Gammaxx S40 create a usable surface area of 35x41mm. Looking at the top of the heatsink, we see the heatpipes are spaced 5.5mm from each other and 60mm apart so as to be in the highest airflow region. The back side of each cooling fin has a series of little 2mm tall wing lets punched into the surface.