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Thermalright AX-478 Heatsink Review
Thermalright AX-478 Heatsink Review
  97%   
Abstract: In this configuration it is the absolute loudest, most annoying, and hazardous-to-fingers heatsink we have ever tested.

 Manufacturer  Category  Published  Author 
Thermalright   Cooling / Heatsinks   Oct 23, 2002   Max Page  

Home > Reviews > Page: The Heatsink: From all sides

Thermalright AX-478 From All Angles

The Fan:

This 80mm fan is what gives the Thermalright AX-478 its massive bite - it is also was leaves the entire cooler over 80mm in height. The fan draws 0.81A of current so it should not be connected up to a motherboard fan header as this may eventually kill the board. To save fingertips and small cats from 'damage' it's also a good idea to install a wire fan grill. Wire grills won't have any noticeable effect on air intake.

Top: The H design heatsink is one that we've seen do really poorly, and in this case, really well. The main section measures just over 20mm in thickness. The outer arms are ~5mm thick, and the fins average at about 1mm thick. Outer fin spacing sits at 2mm. The heatsink is composed from this small extrusion section which has been nickel plated and brazed/soldered to a rather thick copper base plate. Since the fan's motor sits directly overtop of the central hub, the design is very efficient - all working fin sections are directly in the path of airflow.

Side A: With the 38mm thick fan back on top of the Thermalright AX-478 we can get a feel for just how tall this heatsink really is. The main portion of the heatsink sits 38mm in height as well, and the nickel plated copper base adds another 6mm. The copper base does not extend the full width of the heatsink however, and is only 50mm wide. The fins of the heatsink are undercut so that the heatsink will actually fit into the pre-defined dimensions of the Intel heatsink retention mechanism.
Side B:
From this side the heatsink looks pretty serious. It is also evident that the copper bar extends past the sides of the main fin section. The reason for this is to create a flat area where the clips can be used to grab a hold of the heatsink and keep it in place within the HSRM.

Heatsink Base:

The base as has been milled flat, and the surface plated with nickel afterwards. There are some small machining marks visible to the eye, but nothing too extensive. The four corners mark where thermal paste can be applied. The heatsink with a fan weighs in at 620 grams so it should be removed if the computer is being transported any great distance, or shipped.

 Previous Page ° ° Next Page 

Table of Contents:

 1:  Thermalright AX-478 Heatsink Review
 2: — The Heatsink: From all sides
 3:  Heatsink Test Parameters
 4:  Acoustic Test Results
 5:  Synthetic Thermal Test Results

List all Thermalright heat sinks that Frostytech tested?

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