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Zalman CNPS7000B-Cu Heatsink Review
Zalman CNPS7000B-Cu Heatsink Review
Abstract: The Zalman CNPS7000B-Cu is assembled from dozens of individual copper fins, joined together at the center by compressing the metal under great pressure and bolting the entire assembly in place.

 Manufacturer  Category  Published  Author 
Zalman   Cooling / Heatsinks   Aug 02, 2006   Max Page  

Home > Reviews > Page: 360° View - Zalman CNPS7000B-Cu Heatsink

360° View - Zalman CNPS7000B-Cu Heatsink
Information on Frostytech's test methodology is available here.
The Heatsink Fan:

The fan Zalman use with the the CNPS7000B-Cu is 90mm in diameter, and about 25mm tall. Rotating at 2600RPM, the fan moves air without creating a lot of noise. The fan connects via a standard three pin motherboard header which supports RPM monitoring. Zalman's Fanmate 2 can be used to further decrease the speed of motor for even quieter operation if desired. Decreasing the speed of the fan will impact on the heatsinks performance by a certain degree since less air is moving over the copper fins.

Heatsink Top:

With the fan and spring clip mechanism removed we can see the the CNPS7000B-Cu for all it is worth. The entire heatsink is made from an assembly of individually punched out sheets of 0.3mm thick copper. The central base section is ~26mm wide, and from tip to tip the heatsink measures approx. 110mm x 110mm. It looks circular, but is more oval shaped really. The cut out in the center of the base section is for the clipping mechanism which applies pressure at the center of the heatsink.

Heatsink Side A:
Standing 62mm high, the CNPS7000B-Cu is fairly compact all things considered. Most heatsinks have the fan mounted on top of the fins which can raise the overall height of a cooler to well over 80mm. The copper fins are spaced about 1.5mm apart at the outside edges. The spring clip system is mounted to the heatsink just under the integral fan.

Heatsink Side B:
From this side we can see just how the copper fins gradually come together to form the body of the heatsink itself. Compressed under high pressure the fins come into perfect contact at the base which is then machined absolutely flat and smooth. The bevel in the shape of the heatsink is so it will clear the certain heatsink retention frames, and any capacitors placed near to the socket.

Heatsink Base:
The 46mm x 43mm copper base of the CNPS7000B-Cu is formed from about 40 individual copper fins which have been pressed tight under high pressure and then bolted together. Since the fins are the base, thermal conductivity is as direct as could be expected. The copper base has been machined flat, and is razor smooth. Surface roughness is on the order of ~16 microinches, which is considered excellent.

With a base finish of this calibre, only a very small amount of good quality thermal compound is necessary. Also note the two sets of holes on each side of the stainless steel mounting clip; the inside holes are for a P4 mounting system, and the outside for Athlon64/AthlonXP.

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Table of Contents:

 1:  Zalman CNPS7000B-Cu Heatsink Review
 2: — 360° View - Zalman CNPS7000B-Cu Heatsink
 3:  Surface Roughness and Acoustic Comparisons
 4:  Final Heatsink Temperature Comparisons

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