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Aopen ACP4LC Pentium 4 Heatsink Review
Aopen ACP4LC Pentium 4 Heatsink Review
  76%   
Abstract: Aopen's fan adaptor allows an 80mm Nidec fan to mount to the 70mm heatsink frame. The point of this, is of course to reduce the noise created by the fan by using a larger and slower rotating impeller.

 Manufacturer  Category  Published  Author 
AOpen   Cooling / Heatsinks   Oct 26, 2003   Max Page  

Home > Reviews > Page: Acoustic Samples: Listen to this Heatsink!

The fan has a bit of a whine to it that may be noticeable outside of the case. Also, because the fan is only held in place with a few clips, vibrations can enter in from the fans motor and produce even more noise. 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 P16 35.3 dB Quiet
Spire SP420B8 40.2 dB
Zalman CNPS7000-Cu 41.7 dB
ArcticCooling SuperSilent4 Pro 41.8 dB
Zalman CNPS6500-AlCu 47.4/28.9 dB
Intel Socket 478 42.5 dB
CoolJag JVC661A 43.9 dB
Arkua 8456X-8T 46.5 dB
Evercool NW9F715CA 47.3 dB
Intel Stock 3.06GHz 47.5 dB
Aopen ACP4LC 48.7 dB
Arkua Q85X-7J 49.0 dB
Arkua 848X-6B 49.3 dB
Taisol CEP426151A 50.7 dB
Scythe Kamakaze 51.0 dB
Arkua 838T-7G 51.7 dB
JMC 401100 53.0 dB
Dynatron DC1207BMW 53.0 dB
Spire SP411C5 53.2 dB
Dynatron DC1207BMY 53.2 dB
Dynatron DC1207BMX 53.4 dB
Thermal Integration (high) TI-V7035TN 53.6 dB
Zalman CNPS5700D-Cu 53.8 dB
Globalwin VA476 54.2 dB
Dynatron DC1206BMV 55.1 dB
AVC 117140 56.1 dB
Taisol CEP447181 56.8 dB
Taisol CCP445172 57.5 dB
Dynatron DC1U-B02 62.2 dB
Coolermaster IHC-H71 64.4 dB
Thermalright (high) SLK-900U 67.2 dB louder

Weighing in at 48.7 dB the nidec fan used on this heatsink is not particularly loud, but it does have a distinctive sound. Part of the noise may be caused by the lack of screws holding the fan tightly in place. Small spaces easily lead to small vibrations from the fan which can create extra sources of noise.

 Previous Page ° ° Next Page 

Table of Contents:

 1:  Aopen ACP4LC Pentium 4 Heatsink Review
 2:  Closer Examination of the Heatsink
 3:  Heatsink Thermal/Acoustic Test Parameters
 4:  Surface Roughness Comparison
 5: — Acoustic Samples: Listen to this Heatsink!
 6:  Final Temperature Results

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