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JMC 400074 Skyjet 70 Radial Fin Heatsink Review
JMC 400074 Skyjet 70 Radial Fin Heatsink Review
  82%   
Abstract: From our standpoint the visual similarities between this radial heatsink and the obs of long ago are pretty superficial.

 Company link  Category  Published  Author 
JMC Products   Cooling / Heatsinks   Mar 31, 2003   Max Page  
Home > Reviews > Page Title: Thermal And Acoustic Test Results

Acoustic Samples: Listen to this Heatsink!

The JMC 400074 produces a moderate amount of sound, with most of that coming in the form of air turbulence which is lower pitched and not nearly as annoying as the whine of a motor. 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.

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
Zalman CNPS700-Cu 41.7 dB
Zalman CNPS6500-AlCu 47.4/28.9 dB
Intel Socket 478 42.5 dB
JMC 400124 47.2 dB
Arkua 848X-6B 49.3 dB
JMC 400074 49.6 dB
Taisol CEP426151A 50.7 dB
Vantec CCK-7025 51.4 dB
Arkua 838T-7G 51.7 dB
JMC 401100 53.0 dB
Dynatron DC1207BMW 53.0 dB
Thermal Integration (high) TI-V7035TN 53.6 dB
Zalman CNPS5700D-Cu 53.8 dB
Globalwin VA476 54.2 dB
Eumax DW-45 54.2 dB
Dynatron DC1206BMV 55.1 dB
Glacialtech Igloo 3300 55.4 dB
AVC 117140 56.1 dB
Taisol CCP445172 57.5 dB
CPUMate DIA10500 57.5 dB
NengTyi NW6700 58.0 dB
Coolermaster IHC-H71 64.4 dB louder

Measuring in at 49.6 dB places the JMC heatsink in the quieter corner of this list, and indeed it is unlikely that you will be bothered by this heatsink when it is under power. The Synthetic thermal test results are next up.



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Table of Contents:

 1:  JMC 400074 Skyjet 70 Radial Fin Heatsink Review
 2:  The heatsink from all sides
 3:  Heatsink Test Parameters
 4: — Thermal And Acoustic Test Results
 5:  Final Synthetic Temperature results

List all JMC Products heat sinks that Frostytech tested?

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