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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: Final Synthetic Temperature results

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
JMC 401100 19.5 35.1 47.4 grey 1 med easy
Zalman CNPS7000-Cu 21.0 35.1 48.7 none 1 low easy
Taisol CCP445172 20.2 37.7 50.9 none 1 med easy
JMC 400074 19.5 37.3 50.9 grey 1 med easy
AVC 117140 22.6 37.8 50.4 none 1 med med
Coolermaster IHC-H71 23.0 37.0 51.1 none 1 loud stiff
Arkua 8568 22.4 37.8 51.7 none 1 med med
JMC 400124 19.5 36.6 52.1 none 1 med-low easy
Thermal Integration (high) TI-V7035TN 20.2 38.3 52.9 none 1 very loud easy
NengTyi XPC5000 23.8 38.4 53.9 none 1 med loud
Alpha PAL8942 27.9 42.6 54.0 none 1 med med
CPUMate DIA-10500 22.8 39.3 55.5 none 1 med easy
Zalman CNPS6500-AlCu 23.1 40.3 57.4 none 1 low easy
Glacialtech Igloo 3300 22.4 40.5 58.8 silver 1 low easy
Taisol CEP426151A 24.3 43.7 59.7 none 1 med easy
Intel Socket 478 22.4 41.8 59.8 carbon 1 low med
Arkua 838T-7G 23.3 42.0 60.0 none 1 med easy
Dynatron DC1207BMW 23.2 42.7 61.1 none 1 med easy
Titan TTC-MT3AB 22.8 41.5 61.2 none 2 loud stiff
Dynatron DC1206BM-S 22.4 43.2 62.0 none 1 med med
AVC 117160 22.4 42.7 62.2 white pad 1 med med
Eumax DW-45 22.6 44.0 62.7 none 1 med easy
Zalman CNPS5700D-Cu 25.7 44.6 64.0 none 1 med easy
Vantec CCK-7025 27.0 45.4 64.1 none 1 med med
JMC 400094 26.1 46.6 65.0 none 1 med easy
Globalwin VA476 28.7 49.5 68.0 grey 1 med easy
Dynatron DC1206BMV 23.1 45.1 68.2 none 1 low easy
Vantec GSN-7015 22.4 47.5 69.0 none 1 loud stiff
Arkua 848X-6B 27.2 54.5 80.4 none 1 low med
50W 100W

It is obvious that the initial thermal results are pretty good for the JMC 400074 Skyjet 70 Pentium 4 heatsink. The large aluminum body and radial fin orientation work well to keep temperatures under control.

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

50W

100W

Alpha PAL8942 14.7 26.1
Zalman CNPS7000-Cu 14.1 27.7
AVC 117140 15.2 27.8
JMC 401100 15.6 27.9
Coolermaster IHC-H71 14.0 28.1
Arkua 8568 15.4 29.3
NengTyi XPC5000 14.6 30.1
Taisol CCP445172 17.5 30.7
JMC 400074 17.8 31.4
JMC 400124 17.1 32.6
CPUMate DIA-10500 16.5 32.7
Thermal Integration (high) TI-V7035TN 18.1 32.7
Zalman CNPS6500-AlCu 17.2 34.3
Taisol CEP426151A 19.4 35.4
Arkua 838T-7G 18.7 36.7
Glacialtech Igloo 3300 18.1 37.1
Intel Socket 478 19.4 37.4
Dynatron DC1207BMW 19.5

37.9

Zalman CNPS5700D-Cu 18.9 38.3
Vantec CCK-7025 18.4 38.4
Titan TTC-MT3AB 18.7 38.4
JMC 400094 20.5 38.9
Globalwin VA476 20.8 39.3
Dynatron DC1206BM-S 20.8 39.6
AVC 117160 20.3 39.8
Eumax DW-45 21.4 40.1
Dynatron DC1206BMV 22.0 45.1
Vantec GSN-7105 25.1 46.6
Arkua 848X-6B 27.3 53.2

50W

100W

For an extruded radial fin design I have to say the JMC 400074 Skyjet 70 performed better than our initial expectations lead on. Looking at the large aluminum heatsink and integrated 70mm fan which lacks all of the glossy marketing that so many other manufacturers employ, it is worth remembering that looks don't necessarily make the heatsink.

It would seem that good thermal design, good thermally conductive materials, good thermal interfaces and efficient airflow all work together on the JMC Skyjet 70 to provide an ideal set of thermal results.

The heatsink is not the most powerful Pentium 4 cooler on the reference list, nor is it the quietest, but it does offer a lightweight solution in a field of copper.

Weighing in at 315grams the all-aluminum JMC 400074 Pentium4 / Xeon heatsink uses a fairly simple design to achieve attractive thermal results. Given the airflow characteristics of our test environment it is hard to say just how well the heatsink would work in a drawn-air 3U server chassis, but given the radial fin design, orientation may be less critical than with more traditional extruded (boxy) heatsinks. The effects could be quite interesting to say the least. In any case, the test results of the JMC Skyjet 70 for use on a P4 really do speak for themselves.

Related Articles:

Here are a few other articles that you might enjoy as well...

1. Zalman CNPS7000-Cu P4 / Athlon64 Heatsink
2. Thermal Integration TI-T707TN Heatsink Review
3. JMC 401100 Phoenix 70 Radial Fin Heatsink
4. EUMAX DW-45 Copper P4 heatsink
5. Thermalright AX-7 Socket A heatsink



 Previous Page °
Heat Sink Review Index  

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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