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Thermalright SLK-900U Copper Heatsink Review
Thermalright SLK-900U Copper Heatsink Review
  90%   
Abstract: Given these two different sizes of fans, rotational speeds, and CFM output it will be interesting to see just how the Thermalright SLK900U reacts thermally!

 Manufacturer  Category  Published  Author 
Thermalright   Cooling / Heatsinks   May 28, 2003   Max Page  

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

Since the Thermalright SLK900U is typically shipped without a fan the end user has much more control over how loud, or how quiet the heatsink will be in operation. For the tests here we chose to go with the extremes - a very loud fan and a very quiet fan. This is just an example of what you can expect, but judging by the number of hardcore cooling types which are talking about the SLK900U, I'd expect most users to be on the Vantec Tornado side of the fence. Personally, I prefer the quieter side, but the choice is up to you. 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.

(low-Zalman) 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.

(high-Vantec) 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 CNPS7000-Cu 41.7 dB
Thermalright (low) SLK-900U 46.2 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
Taisol CEP426151A 50.7 dB
JMC 400094 50.8 dB
Vantec CCK-7025 51.4 dB
Arkua 838T-7G 51.7 dB
JMC 401100 53.0 dB
Dynatron DC1207BMW 53.0 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
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
Dynatron DC1U-B02 62.2 dB
Coolermaster IHC-H71 64.4 dB louder
Thermalright (high) SLK-900U 67.2 dB louder

The numbers really speak for themselves here. With the louder fan the SLK900U produces upwards of 67.2 dB which is makes it the loudest socket 478 heatsink we have tested to date. With the Zalman fan strapped on, it is among the quietest. The key will be to take note of just how these two fans impact the thermal performance of this massive copper heatsink....

 Previous Page ° ° Next Page 

Table of Contents:

 1:  Thermalright SLK-900U Copper Heatsink Review
 2:  The heatsink from all sides
 3:  New Heatsink Test Parameters
 4: — Thermal And Acoustic Results
 5:  Final Temperature Results

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