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Thermalright SLK-900A Copper Heatsink Review
Thermalright SLK-900A Copper Heatsink Review
  85%   
Abstract: The SLK-900A ships without a fan, but that flexibility allows you to determine just how loud and annoying the heatsink will be.

 Manufacturer  Category  Published  Author 
Thermalright   Cooling / Heatsinks   Dec 27, 2003   Max Page  

Home > Reviews > Page: Close examination of the heatsink

Thermalright SLK-900A Heatsink From All Angles
The Fan:

There are a variety of fan sizes which can be used with the Thermalright SLK-900A including; 92mm, 80mm, 75mm, 70mm, and 65mm widths. The wire clips slide into small holes punched into the fins which hold the whole fan retention clip assembly in place. Since the wire clips lock into the screw holes there is no easy way of mounting a wire grill over the fan itself.

Heatsink Top:

There are approximately 36 sets of thin copper fins on the SLK-900A. Each fin measures about 0.35mm thick and is a spaced 1mm apart. The fins each have a small copper fold at the base 1mm wide which allows them to be soldered to the sides of the triangular copper base. The copper base is just 32mm wide, so add-ons like TEC's are not feasible.

Side A:

Looking at the other side you can see the basic fin structure that has gone into making this heatsink. Notice how the copper base rises up to the center of the heatsink 25mm, instead of just being a flat plate all the way across. The copper fins have been soldered to the triangular copper base at the heart of the SLK-900A, and to keep the fins in line at the outer edges there are interlocking tabs.

Side B:
There are four sets of holes for various sizes, and widths of fans. The steps at the top of the heatsink correspond with different widths of fans. The triangular copper base is 7mm thick at the bottom, and the two triangular sides rise up 25mm with a 7mm space in the center for the three-prong clip. Note the small holes punched into the copper fins for the wire clips.

Heatsink Base:

The base of the SLK-900A has been milled flat, and after checking with an engineers straight edge we can see that the manufacturer has done a very good job of keeping the surface true. The surface has a very slight milled finish, but is otherwise pretty smooth. One end of the base is notched to clear the socket cam arm. The fins stand out 13mm from the base plate which allows exhaust air from the fan above to be directed down towards the processor area.

 Previous Page ° ° Next Page 

Table of Contents:

 1:  Thermalright SLK-900A Copper Heatsink Review
 2: — Close examination of the heatsink
 3:  Heatsink Thermal/Acoustic Test Parameters
 4:  Surface Roughness / Acoustic Comparisons
 5:  Temperature Results

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