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Zalman CNPS5700D-Cu Ducted P4 Heatsink Review
Zalman CNPS5700D-Cu Ducted P4 Heatsink Review
  88%   
Abstract: When the Zalman CNPS5700D-Cu arrived I have to admit there was a bit of a "whoa" factor to contend with.

 Company link  Category  Published  Author 
Zalman   Cooling / Heatsinks   Sep 16, 2002   Max Page  
Home > Reviews > Page Title: Acoustic Test Results

Acoustic Samples: Listen to this Heatsink!

Running under normal power levels the CNPS5700D is a bit louder than other Zalman heatsinks, and this is mainly due to the fan duct which creates a bit of air turbulence. The heatsink under quiet mode with the fan mate 1 is pretty quiet indeed. To listen to this heatsink under full power for yourself, click on the little headphones below and download the MP3 file.

FrostyTech Acoustic Sampling Chamber

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
Zalman CNPS6500-AlCu 47.4/28.9 dB quiet
Intel Socket 478 42.5 dB
Cho-Liang CL-CB0094-1A 49.8 dB
Cho-Liang CL-CB00881 50.2 dB
Taisol CEP426151A 50.7 dB
Vantec CCK-7025 51.4 dB
ChoLiang CB0307Z17 52.9 dB
Dynatron DC1207BMW 53.0 dB
Zalman CNPS5700D-Cu 53.8 dB
Globalwin VA476 54.2 dB
Dynatron DC1206BMV 55.1 dB
Glacialtech Igloo 3300 55.4 dB
ChoLiang CB0309Z17 55.7 dB
AVC 117140 56.1 dB
NengTyi NW6700 58.0 dB
Coolermaster IHC-H71 64.4 dB louder

At 53.8 dB the CNPS5700D is running at full power. The sound is mostly coming from the air moving about in the air duct. We tried a few trick to quiet this sound down by splitting the duct into two parts but this really only succeeded in limiting the amount air being exhausted.



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Table of Contents:

 1:  Zalman CNPS5700D-Cu Ducted P4 Heatsink Review
 2:  Fitting the Zalman heatsink
 3:  A quick blue-LED fan mod
 4:  Close up look at the heatsink
 5:  Heatsink Test Parameters
 6: — Acoustic Test Results
 7:  Synthetic Thermal Test Results

List all Zalman heat sinks that Frostytech tested?

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