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Gelid GX-7 Stacked Heatpipe Heatsink Review
Gelid GX-7 Stacked Heatpipe Heatsink Review
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Abstract: The GX-7 heatsink is constructed around seven 6mm diameter heatpipes, but the number of heatpipes isn't what caught our attention. What's unique about the GX-7 cooler are the two heatpipes stacked on top of the five primary heatpipes.

 Company link  Category  Published  Author 
Gelid    Cooling / Heatsinks   Nov 16, 2011   Max Page  
Home > Reviews > Page Title: 360° View - Gelid GX-7 Heatsink

360° View - Gelid GX-7 Heatsink


Information on Frostytech's test methodology is available here.

A single 'Wing 12PL' 120mm PWM fan ships with the GX-7 heatsink, it's internally illuminated by blue LEDs. The fan spins at 1800-600RPM and draws power via a 4-pin motherboard header. A second 120mm fan can be installed on the rear of the fin stack. With the fan removed you can see how widely the aluminum fins are spaced on this heatsink and how closely the seven heatpipes are grouped together. A small extruded aluminum heatsink caps the copper base plate.

The Gelid GX-7 heatsink stands 158mm tall, the bottom-most fin is elevated 38mm for clearance of adjacent capacitors. The seven 6mm diameter copper heatpipes are grouped closely at the base (two stacked on five) and as they pass through the fins of the cooler. Heatpipe pitch ranges from 55-85mm apart. Each aluminum fin measures 0.4mm thick and spaced 2.0mm from the next.

The copper base on the Gelid GX-7 heatsink measures 34x35mm in size. The copper portion of the base ranges from 2.5-5mm thick. The five bottom 6mm diameter copper heatpipes have been soldered between the aluminum and copper base plate, along with the top two heatpipes.

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 copper base plate of the Gelid GX-7 heatsink is machined perfectly flat in both axis and has a smooth surface finish. Base surface roughness is at or better than approximately ~8 microinches.

Next, let's see how this heatsink handles the heat compared to a selection of other heatsinks!



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Table of Contents:

 1:  Gelid GX-7 Stacked Heatpipe Heatsink Review
 2: — 360° View - Gelid GX-7 Heatsink
 3:  Acoustic Sample and Heatsink Sound Levels
 4:  AMD Heatsink Temperature Comparisons
 5:  Intel Heatsink Temperature Comparisons

List all Gelid heat sinks that Frostytech tested?

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