The 100mm fan spins at 2000-1000RPM and draws power from a standard 3-pin motherboard fan header. The fan is held on by four rubber vibration absorbing posts. Three 6mm diameter copper heatpipes rise up through bare aluminum fins which have a dimpled surface texture. Each aluminum fin measures 0.3mm thick and is spaced 2.0mm apart. The surface texturing on each fin consists of a very small dimple popping out on both sides of the metal.

The SilenX EFZ-100HA1 heatsink stands 67mm tall, the bottom-most fin is 32mm above the CPU socket for clearance. The three heatpipes are positioned side to side at the base, then mesh through the aluminum fins in a 2:1 ratio on each side. The base incorporates a 9mm thick aluminum section to provide support for clamping. A small extruded aluminum fin segment is incorporated into the base.

Looking at the bottom of the SilenX heatsink we see the exposed heatpipes and smoothly machined base. The base measures 38x44mm in size.