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JMC Arctic Ice 400011 Heatsink Review
JMC Arctic Ice 400011 Heatsink Review
Abstract: JMC strike back in time with the Arctic Ice which is packaged with socket 423 mounting hardware.

 Manufacturer  Category  Published  Author 
JMC Products   Cooling / Heatsinks   Apr 05, 2002   Max Page  

Home > Reviews > Page: Test Results - Acoustic Measurements / Thermal Results

Acoustic Samples: Listen to this Heatsink!

The fan really doesn't draw that much power or produce that much noise so this waveform image is slightly overstated I'd say. Sound is a difficult thing to image so your best bet is to always just listen to the heatsink by clicking on the MP3 file (click on the headphones).

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.

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
JMC 400011 48.0 dB
Cho-Liang CL-CB00881 50.2 dB
AVC 117140 56.1 dB louder

The JMC fan used on the 400011 comes in just behind the Intel heatsink which is not really that surprising.

Synthetic Temperature Test Results: *Ranked according to 100W interface die test results.

FrostyTech Synthetic Temperature Test Platform Results
Mfg. Model Ambient Temp. 27mm large copper block 27mm large copper block Thermal pad No. Fans Fan Noise Clip force
50W 100W
1 AVC 117140 22.6 37.8 50.4 none 1 med med
2 Arkua 8568 22.4 37.8 51.7 none 1 med med
3 Zalman CNPS6500-AlCu 23.1 40.3 57.4 none 1 low easy
4 Vantec GSN-7025 22.5 41.7 58.5 none 1 med med
5 Chauh Choung DTA-478 22.4 42.1 59.0 carbon 1 low med
6 Intel Socket 478 22.4 41.8 59.8 carbon 1 low med
7 Titan TTC-MT3AB 22.8 41.5 61.2 none 2 loud stiff
8 Dynatron DC1206BM-S 22.4 43.2 62.0 none 1 med med
9 AVC 117160 22.4 42.7 62.2 white pad 1 med med
10 JMC 400011 23.0 43.4 63.6 pink 1 low easy
11 Cho-Liang CL-CB00881 23.6 41.2 65.0 none 1 med easy
12 Vantec GSN-7015 22.4 47.5 69.0 none 1 loud stiff
50W 100W

When the heatsinks are tested under 100W of heat you can begin to see where the different coolers are separated. In the case of the JMC 400011, it falls behind that of the stock Intel heatsink and this really shows that the design is outdated.

After all this is a heatsink which was originally intended to mount upon a socket 423 processor. Even though the JMC heatsink is rated to 2.0GHz, you could do better with stick Intel solutions so the incentive to switch is just not there.

Rise Above Ambient Temp. (c)
Mfg. Model 27mm large copper block 27mm large copper block



1 AVC 117140 15.2 27.8
2 Arkua 8568 15.4 29.3
3 Zalman CNPS6500-AlCu 17.2 34.3
4 Vantec GSN-7025 19.2 36.0
5 chauh Choung DTA-478 19.7 36.6
6 Intel Socket 478 19.4 37.4
7 Titan TTC-MT3AB 18.7 38.4
8 Dynatron DC1206BM-S 20.8 39.6
9 AVC 117160 20.3 39.8
10 JMC 400011 20.4 40.6
11 Cho-Liang CL-CB00881 18.2 41.4
12 Vantec GSN-7105 25.1 46.6



Well the JMC heatsink fairs better than both the Cho-Liang and the Vantec GSN-7015 in the rise above ambient results. In actuality, the 400011 is not as bad as we may have first thought.

It is not a great heatsink, but falls a short 3 degrees behind that of the Intel heatsink. A simple fan switch could be all that is needed to put the Arctic Ice back on track and at par with the stock Intel platform. This is a bit surprising because we had really expect the JMC heatsink to perform pretty poorly.

Just goes to show you, the test results are more important than any impression. So while the JMC Arctic Ice socket 423/478 (with right HSRM) is a sub-stock heatsink performer, all is not completely lost thermally.

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Heat Sink Review Index  

Table of Contents:

 1:  JMC Arctic Ice 400011 Heatsink Review
 2:  New Heatsink Test Parameters
 3: — Test Results - Acoustic Measurements / Thermal Results

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