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Coolsonic CS1672A Copper Skive Heatsink Review
Coolsonic CS1672A Copper Skive Heatsink Review
  75%   
Abstract: It's hard not to be a little impressed each time a TMD fan spins up creating its distinctive whirling sound.

 Company link  Category  Published  Author 
Coolsonic   Cooling / Heatsinks   Feb 05, 2003   Max Page  
Home > Reviews > Page Title: Close up look at the heatsink

Coolsonic CS1672A From All Angles

The Fan: The heatsink uses what the manufacturer Kai-Way term aa "top performance" Tip-Magnetic Drive fan YS-Tech. The fan spins at about 5600 RPM, and draws about 0.3A of power. TMD fans as they care commonly called are vastly superior in terms of delivering airflow uniform airflow. Typical fans have a dead spot just below the motor which TMD fans are free from. The fan is protected by a fan grill and connects via a 3-pin connector which also supports RPM monitoring.

Top: It is really nice to see that the tip of every copper fin is razor sharp - meaning that air from the fan will have an easier time entering the fins all the way down. Square tipped fins can stall air as there is generally more resistance to it passing. The copper skived fins are 0.45mm thick which is a little more than we usually see (0.3mm). The fan shroud keeps the TMD fan 6mm above the tips of the copper fins. The clip has no notch to keep if from sliding around on the heatsink.

Side A: From the side we can see that there are a total of 34 fins spaced 1.30mm apart. The CS1672A is not the highest density Skive heatsink on the market, but has a nice balance to it. The copper base is 4mm thick, and 60mm in width. Each fin is about 22mm in height. The fan shroud is copper plated aluminum.
Side B:
The fan shroud is simply screwed onto the copper skive portion of the heatsink and the TMD fan is subsequently attached with machine screws. The clip is tool based, so you will need to find a flat head screw driver before installing the CS1672A. As we mentioned before, there is no tab at the fulcrum of the clip to prevent the mass of the heatsink from sliding a little after installation. The two sets of skived fins are 32mm in width. The opening for the clip is 6mm.

Heatsink Base:

From this angle we caught all the sanding marks so the base looks worse than it actually is. Coolsonic have machined the base and then given it a light sanding. The copper is pretty flat, and nice and smooth. The area where the silicon core makes contact with the heatsink is generally flat, but not perfectly so.



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Table of Contents:

 1:  Coolsonic CS1672A Copper Skive Heatsink Review
 2: — Close up look at the heatsink
 3:  Heatsink Test Parameters
 4:  Acoustic Test Measurements & Recordings
 5:  Synthetic Temperature Test Results

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