360° View - Evercool HPK-10025EA Heatsink Information on Frostytech's test methodology is available here.
The red, 7-bladed impeller on this suspended 110mm fan spins at 1800RPM and draws power from a 3-pin motherboard fan header. The four 6mm diameter copper heatpipes extend from the base up through the fins where they are swagged into place. Each aluminum fin measures 0.2mm thick and is spaced 2.0mm from the next. The top edge of each aluminum fin has a saw-tooth pattern which can help decrease air-flow resistance.
Evercool's HPK-10025EA heatsink stands 65mm tall, the aluminum fins measure roughly 25mm tall by 99mm across. Four copper heat pipes are grouped at the base where they make direct contact with the processor IHS (exposed heatpipes). The base incorporates an 8mm thick aluminum block to provide support for clamping. The fan is held in place with two wire spring clips.
The base of the Evercool HPK-10025EA measures 39 x 42mm in size. Looking from the top down reveals a saw tooth pattern on the leading edges of the aluminum fins. Note the three 3.0mm tabs of aluminum which separate the 6mm diameter copper heatpipes swagged into the aluminum base block.