SilentiumPC's Fera2 HE1224 heatsink ships with a 120mm PWM fan that draws power from a standard 4-pin fan header. The 154mm tall heatsink has four 6mm diameter copper heatpipes, each heatpipe is spaced 4mm from the next. The aluminum fins measure 0.4mm thick and are spaced 2.0mm apart. The bottom-most fin is elevated 39mm above the base for motherboard clearance.

The four 6mm diameter copper heat pipes are swaged into the aluminum base plate in such a way that the center-most heatpipes intersect the center area of the fins.

The exposed heatpipe base of SilentiumPC Fera2 HE1224 heatsink measures 45x35mm in size. The aluminum support plate for the mounting brackets is 11.5mm thick. Looking at the top of the heatsink we can more clearly see how the thermal engineer designing this heatsink has configured all heatpipes in a straight line.