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Thermal Integration TI-A8641L Heatsink Review
Thermal Integration TI-A8641L Heatsink Review
  85%   
Abstract: Looking over the Thermal Integration TI-A8641L it is easy to draw parallels with Zalman's flower shaped heatsinks.

 Company link  Category  Published  Author 
Thermal Integration   Cooling / Heatsinks   Feb 22, 2004   Max Page  
Home > Reviews > Page Title: Closer Examination of the Heatsink

Thermal Integration TI-A8641L Heatsink From All Angles
The Fan:
The 70mm fan is the standard size for all mainstream PCs on the market. Larger 80mm and even 92mm fans are starting to make headway with some custom cooling solutions, but they can be difficult to fit into all case situations. The fan draws 0.4A and rotates at 3800 RPM to provide the necessary airflow to keep back pressure from becoming an issue. The fan connects to a standard 3-pin motherboard fan header.

Heatsink Top:
After unscrewing the fan from the aluminum fan shroud which supports it 4mm above the tips of fins, we can get a better look at how things work. The aluminum fins are positioned towards the outer edges of the heatsink where there is no direct contact with the CPU core. Directly over the center of the CPU core are two thick copper fins that support the forces the retention clip applies to the heatsink. Surrounding them is 18mm worth of copper fin. It is this area of the heatsink which comes in contact with the processor core.

Side A:
Each fin measures 0.3mm thick and is spaced 1.0mm apart. The two central fins which support the clip, and indeed the entire weight of the heatsink when it is installed are both 1mm thick. The Fins are all 40mm tall, though their edges are slightly patterned. The base measures 10mm thick, and the single spring clip uses all three catches to latch on to the processor socket.

Side B:
Some vents along the outer edges of the fan shroud are for decorative purposes undoubtedly. Given the 470 gram weight of the Thermal Integration TI-A8641L, it is not surprising that the manufacturer opted to use a three-prong clip mechanism which offers a little more lateral support. Also note the steel wedge the bolts are screwed into - it is this which keeps the entire heatsink from falling into pieces.

Heatsink Base:

With the heatsink assembled, a machining or sanding operation has been done to the base to smooth out the individual copper and aluminum fins. The base finish is pretty flat all things considered. The surface roughness is typical of such sanding operations.



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Table of Contents:

 1:  Thermal Integration TI-A8641L Heatsink Review
 2: — Closer Examination of the Heatsink
 3:  Heatsink Thermal/Acoustic Test Parameters
 4:  Surface Roughness and Acoustical Comparisons
 5:  Synthetic Temperature Test Results

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Time stamped: 5:30AM, 09.21.2019
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