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Arctic Cooling Copper Silent 2 Heatsink Review
Arctic Cooling Copper Silent 2 Heatsink Review
  76%   
Abstract: Arctic Cooling have developed what is perhaps the oddest looking fan we've seen in a long time...

 Company link  Category  Published  Author 
arctic cooling   Cooling / Heatsinks   Dec 25, 2003   Max Page  
Home > Reviews > Page Title: Surface Roughness Comparison

Surface Roughness Comparator:

Surface finish is an important factor that we all look for when holding a new heatsink. Flipping a cooler over to see how well the base has been machined is a quick way to judge the attention to detail that was put into making it. The following FrostyTech Surface Roughness Comparator offers a concise cross section common machine surface finishes. Not every heatsink base will fit into the envelope of this gage, but it does offer a very handy set of representations.

This commercially available gage has 22 machined surfaces from 2 to 500 microinches; Lapped (2, 4, and 8 µ" RA), Ground (8, 16, 32, and 63 µ" RA), Blanchard Ground (16 and 32 µ" RA), Shape Turned (32, 63, 125, 250, and 500 µ" RA), Profiled (63, 125, 250, and 500 µ" RA), and Milled (63, 125, 250, and 500 µ" RA).

FrostyTech Surface Roughness Comparator
2L 4L 8L 8G 16G 16BL 32G 32BL 32ST 63G 63M 63P 63ST 125M 125P 125ST 250M 250P 250ST 500M 500P 500ST

The base of a heatsink plays an important role in how well the cooling apparatus interfaces with the processor. Poor surface roughness will affect a good heatsink just as much as a good surface finish will improve thermal conductivity. In an effort to put a more quantitative spin on the comments we provide about base finishes, FrostyTech has begun using a Surface Roughness Comparator.

Move your mouse over the image above to see an example at right. Numbers are in Microinches, and finishes from 2 microinches to 32 microinches are excellent-to-good.

Evaluation Notes:

The Arctic Cooling Copper Silent 2 heatsink had a surface roughness of approximately 32M, which is considered good.

Acoustic Samples: Listen to this Heatsink!

Despite the odd appearance of the Copper Silent 2 fan, the design is remarkably quiet under power. To listen to this heatsink for yourself in operation, be sure to click on the little headphones icon below and download the Acoustic Sample MP3 file.

(high) FrostyTech Acoustic Sampling Chamber

Standard Waveform view of a 10 second recording. Click on the headphones to listen to an MP3 recording of this heatsink in operation.
Listen to this Heatsink now.

Sound Level Measurements:

Listening to the actual noise a heatsink makes allows you to hear what pure numbers alone cannot get across. To further emphasize FrostyTech's reliance on cold hard facts when evaluating a heatsink, we also take Decibel readings with a sound level meter. These results may be higher than the manufacturer's listed specs, but then again these are real world measurements. Measurements are made on the dB (A) scale.

FrostyTech Sound Level Results
- Manufacturer Model Noise Level Scale
Verax (low RPM) P14Cu 31.2 dB Quiet
Verax P11T 35.3 dB
Spire 5U213C1H3G 35.7 dB
ArcticCooling CuSilent2 37.9 dB
Coolermaster HSC-V62 43.7 dB
Akasa AK821 44.2 dB
Spire 5F263 44.5 dB
Zalman All Flower HSF 47.4/28.9 dB
Arkua 728M-7N01 48.2 dB
Taisol CGK760092 48.4 dB
Cho-Liang CB0307U-17 49.5 dB
Titan TTC-CU9TB/SC 50.5 dB
Taisol CEK787172 50.7 dB
nPowerTek TTIC NPH-2 50.7 dB
Arkua 628 50.7 dB
Tocools Novasonic 52.2 dB
Tocools Novasonic-AlCu 52.4 dB
Thermal Integration TI-V77L 53.0 dB
Sibak AE01625B 58.2 dB
AVC Tundra 2 58.4 dB
Sibak AC02625B 59.7 dB
Coolermaster HHC-001 59.9 dB
Sibak AC06725TH 62.4 dB
Dynatron DC1206BMP 65.1 dB
Thermalright SLK800 66.2 dB
Thermalright AX-7 66.4 dB louder

Weighing in at 37.9 dB, the Arctic Cooling Copper Silent 2 is indeed remarkably quiet for an active heatsink. Low noise heatsinks don't always translate into very good thermals, so it will be interesting to see how the heatsink handles the synthetic temperature tests next.



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Table of Contents:

 1:  Arctic Cooling Copper Silent 2 Heatsink Review
 2:  Close examination of the heatsink
 3:  Heatsink Thermal/Acoustic Test Parameters
 4: — Surface Roughness Comparison
 5:  Final Temperature Results

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