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SilenX EFZ-80HA2 Low Profile Heatsink Review
SilenX EFZ-80HA2 Low Profile Heatsink Review
  79%   
Abstract: Tiny heatsinks have their place, but at first glance the SilenX EFZ-80HA2 heatsink really only seems suitable for cooling energy efficient or sub-85W TDP microprocessors...

 Company link  Category  Published  Author 
SilenX   Cooling / Heatsinks   Sep 01, 2010   Max Page  
Home > Reviews > Page Title: 360° View - SilenX EFZ-80HA2 Heatsink Review

360° View - SilenX EFZ-80HA2 Heatsink


Information on Frostytech's test methodology is available here.

The 80mm non-PWM fan spins at 1200-2400RPM and draws power from a standard 3-pin motherboard fan header. Just two 6mm diameter copper heatpipes rise up through bare aluminum fins which have a dimpled surface texture. Each aluminum fin measures 0.4mm 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-80HA2 heatsink stands 112mm tall, the bottom-most fin being 31mm above the CPU socket. The two heatpipes are positioned side to side where they make direct contact with the processor. The base incorporates a 10mm thick extruded aluminum section to provide support for clamping, with 10mm high fins for a little extra cooling surface area.

Looking at the top of the SilenX EFZ-80HA2 heatsink we can see dimpled fin texture easily. The edges of the stamped aluminum fins are sharp, so take care when handling. The base of the heatsink measures 37x43mm in area. The two exposed copper heatpipes are centrally located both at the base and where passing through the 37mm-wide aluminum fin stack.

Base Finish and Flatness

Flipping a heatsink over to inspect the business end is often a simple indicator of overall cooler quality. More practically speaking, a heatsink is in many ways only as effective as the contact it makes with the processor - the flatter and smoother the better. Base finish is one of the criteria that Frostytech measure in the course of evaluating heatsinks, and it involves two distinct aspects. Surface Finish is the first; this is calculated with the aid of Surface Roughness Comparator that has a cross section of common machine surface finishes and their numerical surface roughness equivalents in microinches. The second is Surface Flatness. This is tested with an engineers straight edge or proven flat surface, in two axis.

The base of SilenX's EFZ-80HA2 heatsink has a surface roughness of approximately 16 microinches, which is considered very good. The base is machined perfectly flat in both axis, with a slight grooved finish from the tooling. The copper and aluminum parts are flush.

Sound level measurements are next in this Frostytech heatsink review.



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Table of Contents:

 1:  SilenX EFZ-80HA2 Low Profile Heatsink Review
 2: — 360° View - SilenX EFZ-80HA2 Heatsink Review
 3:  Sound Level Measurements: Which Heatsink is Quietest?
 4:  AMD Heatsink Temperature Comparisons
 5:  Intel LGA775 Heatsink Temperature Comparisons

List all SilenX heat sinks that Frostytech tested?

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