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Zalman CNPS5700D-Cu Ducted P4 Heatsink Review
Zalman CNPS5700D-Cu Ducted P4 Heatsink Review
Abstract: When the Zalman CNPS5700D-Cu arrived I have to admit there was a bit of a "whoa" factor to contend with.

 Manufacturer  Category  Published  Author 
Zalman   Cooling / Heatsinks   Sep 16, 2002   Max Page  

Home > Reviews > Page: Synthetic Thermal Test 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
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
NengTyi XPC5000 23.8 38.4 53.9 none 1 med loud
Alpha PAL8942 27.9 42.6 54.0 none 1 med med
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
Chauh Choung DTA-478 22.4 42.1 59.0 carbon 1 low med
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
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
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
Cho-Liang CL-CB00881 23.6 41.2 65.0 none 1 med easy
Cho-Liang CL-CB0307Z17 24.2 45.6 65.7 none 1 med easy
Cho-Liang CL-CB0094-1A 23.2 39.5 67.9 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
ChoLiang Cl-CB0309Z17 24.3 46.7 68.6 none 1 med stiff
Vantec GSN-7015 22.4 47.5 69.0 none 1 loud stiff
50W 100W

Zalman heatsinks fall under the low-noise category even though the CNPS5700D has shown us it is a bit louder under normal operation. The first set of temperature results in this list of reference heatsinks seems to show us that the Zalman is just a little shy of the stock Intel heatsink. What these results do not indicate is the effect the air duct will have to overall case temperatures since the hot exhaust air is pushed right towards the exhaust case fan.

In any case, let's have a look at the final rise above ambient temperatures to see where things really stand.

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



Alpha PAL8942 14.7 26.1
AVC 117140 15.2 27.8
Coolermaster IHC-H71 14.0 28.1
Arkua 8568 15.4 29.3
NengTyi XPC5000 14.6 30.1
Zalman CNPS6500-AlCu 17.2 34.3
Taisol CEP426151A 19.4 35.4
chauh Choung DTA-478 19.7 36.6
Glacialtech Igloo 3300 18.1 37.1
Intel Socket 478 19.4 37.4
Dynatron DC1207BMW 19.5


Zalman CNPS5700D-Cu 18.9 38.3
Vantec CCK-7025 18.4 38.4
Titan TTC-MT3AB 18.7 38.4
Globalwin VA476 20.8 39.3
Dynatron DC1206BM-S 20.8 39.6
AVC 117160 20.3 39.8
Cho-Liang CL-CB00881 18.2 41.4
Cho-Liang Cl-CB0307Z17 21.4 41.5
Cho-Liang CL-CB0309Z17 22.4 44.3
Cho-Liang CL-CB0094-1A 16.3 44.7
Dynatron DC1206BMV 22.0 45.1
Vantec GSN-7105 25.1 46.6



Given the actual size of the metal heatsink component hidden behind all that plastic, the results of the Zalman CNPS5700D-Cu are pretty good. As a low noise cooling solution the Zalman heatsink has a lot to offer, but other heatsinks like the Vantec CCK-7025 managed a bit quieter operation in stock configuration.

Still, it is the overall design we are looking at here, and the results are pretty good for a low noise heatsink of this size. The full-size Zalman fan heatsinks have a larger surface area and tend to operate a little more effectively that this design, but in terms of style, and easy of use the Zalman CNPS5700D-cu is pretty remarkable.

The fan duct is an important addition to this line of heatsinks and brings to light an interesting question which hasn't really been addressed by the cooling industry. By directing warm exhaust air directly to the case fans the goal is moved away from cooling the processor to new levels, and shifts to cooling the processor reasonably well, and decreasing the overall case temperatures by a larger quotient.

This is difficult to fully test, but under ideal conditions this concept should equate to an overall increase in cooling capability which is very cool indeed.

Related Articles:

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

1. Zalman CNPS6500B-Cu P4 Heatsink
2. Alpha PAL8942 Pentium 4 Heatsink
3. Zalman CNPS6500b-AlCu Pentium 4 Heatsink Review
4. Globalwin VA476 Pentium 4 Heatsink Review
5. Vantec CCK-7025 Pentium 4 Heatsink Review

 Previous Page ° Heat Sink Review Index  

Table of Contents:

 1:  Zalman CNPS5700D-Cu Ducted P4 Heatsink Review
 2:  Fitting the Zalman heatsink
 3:  A quick blue-LED fan mod
 4:  Close up look at the heatsink
 5:  Heatsink Test Parameters
 6:  Acoustic Test Results
 7: — Synthetic Thermal Test Results

List all Zalman heat sinks that Frostytech tested?

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