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Cho Liang CB0315U17 Copper Heatsink Review
Cho Liang CB0315U17 Copper Heatsink Review
  82%   
Abstract: On the plus side, this finish leaves the heatsink looking like a shiny aerodynamic block of copper.

 Company link  Category  Published  Author 
Cho Liang   Cooling / Heatsinks   Jul 15, 2002   Max Page  
Home > Reviews > Page Title: Acoustic Test Results

Acoustic Samples: Listen to this Heatsink!

There was an odd aspect of the fan that we noticed while testing the Cho Liang heatsink. The RPM, or noise signature would constantly fluctuate in such a way that one of two things were happening. The first may have been that the bearings were causing the fan to stick, or rotate less freely on uneven intervals but I find that unlikely. The second, and more plausible explanation was that the fan was experiences variable amounts of back pressure.

All cooling systems experience a level of back pressure, but with this Cho Liang heatsink it seemed as though air would move through fins freely for a few seconds and then begin to back up and overflow, with the entire scenario repeating itself over an over. It was interesting, and in the long run the fluctuations in noise signature could become annoying if they superceded the sound of the powersupply and other case fans for example.

FrostyTech Acoustic Sampling Chamber
http://www.frostytech.com/articleimages/Listen to this Heatsink now.
Standard Waveform view of a 10 second recording. Click on the headphones to listen to an MP3 recording of this heatsink in operation.

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.

FrostyTech Sound Level Results
- Manufacturer Model Noise Level Scale
Coolermaster HHC-L61 42.2 dB quiet
Coolermaster HSC-V62 43.7 dB
Spire 5F263 44.5 dB
JMC Prducts 400023 46.6 dB
Zalman All Flower HSF 47.4/28.9 dB
Taisol CGK760092 48.4 dB
GlacialTech Igloo 2310 49.4 dB
Cho-Liang CB0307U-17 49.5 dB
Arkua 628 50.7 dB
Cho Liang CB0315U17 52.5 dB
Noisecontrol Silverado 50.8 dB
NengTyi XPC5000 52.4 dB
Titan TTC-CU5TB 57.6 dB
Ajigo MF014-021 52.8 dB
Ajigo SF017-011 53.6 dB
Spire 5T235 52.5 dB
Thermal Integration TI-V77L 53.0 dB
Tocools Crown 54.5 dB
Cybercooler P5750 55.4 dB
Sibak AT01515B 55.8 dB
Sibak AE01625B 58.2 dB
Sibak AC02625B 59.7 dB
Coolermaster HHC-001 59.9 dB
Dynatron DY1206BH-625 63.3 dB
Dynatron DC1206BMP 65.1 dB louder

Below 55 dB is usually pretty good, and this copper Cho Liang heatsink manages to come in at 52.5 dB which pretty great. There are way too many heatsinks on the market today which are just too noisy, so it can sometimes be a good idea to buy a heatsink with a smaller, lower noise fan first. If temperatures dictate, a switch to larger, higher RPM fan can always occur at a later date as needed.



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Table of Contents:

 1:  Cho Liang CB0315U17 Copper Heatsink Review
 2:  Close up look at the heatsink
 3:  New Heatsink Test Parameters
 4: — Acoustic Test Results
 5:  Synthetic Temperature Test Results

List all Cho Liang heat sinks that Frostytech tested?

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