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Zalman CNPS9700NT Heatsink Review
Zalman CNPS9700NT Heatsink Review
  89%   
Abstract: What sets the CNPS9700NT apart is a 100mm Pulse Width Modulation (PWM) compliant fan - making this heatsink a more attractive choice for Intel platforms than the pervious model.

 Company link  Category  Published  Author 
Zalman   Cooling / Heatsinks   Dec 29, 2007   Max Page  
Home > Reviews > Page Title: Intel LGA775 Final Heatsink Temperature Comparisons

FrostyTech Mk.II Synthetic Thermal Heatsink Test Results
Intel Pentium D / Extreme Edition & Quad Core class heatsinks tested at 150W
Intel Core 2 Duo / Pentium 4 / Celeron class heatsinks tested at 85W

Results based on readings from a 30x30mm copper interface die with 150W and 85W heat loads applied on the LGA775 version of the Mk.II Test Platform. Temperature results listed for each heatsink were calculated by determining the rise over ambient temperatures at time of test. Information on Frostytech's test methodology is available here.
Socket 775 compatible CPU heatsinks
Manufacturer: Model No.: Fan Speed: 150W
Thermal Test* (°C)
85W
Thermal Test (°C)
Noise Level (dBA)

Thermalright Ultra 120 17.8 10.6 53.7
3Rsystem Iceage 120 high 18.2 12.1 47.9
Coolermaster Hyper 212 19.0 11.8 45.9
Apack Zerotherm BTF92 OC Ed high 19.0 11.2 53.6
Zalman CNPS9700 LED high 19.0 10.4

56.5

Xigmatek HDT-S983 high 19.5 11.8 52.7
Scythe Mugen 19.5 11.4 46.0
Tuniq Tower 120 high 19.6 12.2 51.6
Thermalright Ultra-90 high 19.6 13.0 56.2
Enzotech Ultra-X high 20.0 8.5 59.1
Zalman CNPS9700NT high 20.3 12.4 52.2
Scythe Infinity SCINF-1000 20.3 12.6 37.8
OCZ Vendetta high 21.3 13.5 52.8
Noctua NH-U12P high

21.3

13.4 40.7
Apack Zerotherm BTF90 21.8 12.7 52.1
Xigmatek HDT-S963 high 21.9 13.7 50.2
Akasa AK-965 high 22.2 13.8 48.1
Apack Zerotherm BTF80 22.8 13.9 51.9
Cooljag Falcon 92-AL high 23.2 14.2 52.1
Rosewill RCX-Z3 high 23.3 14.0 58.6
Coolink Silentator high 23.5 16.4 41.2
Scythe Mine Rev. B 23.6 15.0 36.8
Cooljag Falcon 92-Cu high 23.6 14.8 52.8
Akasa AK-920 high 24.3 14.1 52.9
Glacialtech Igloo 5750 PWM high 24.9 14.6 52.3
Asus Arctic Square high 24.9 14.9 44.9
Akasa AK-922 (EVObue) high 25.5 15.4 60.3
Coolermaster Aquagate Mini R80 high 25.7 16.2 59.2
Asus Silent Square EVO high 25.8 15.6 42.8
Glacialtech Igloo 5610 PWM high 25.9 15.9 59.5
Thermalright SI-128SE 26.5 15.2 44.5
Auras SLC-747 high 27.9 25.7 52.2
Thermalfly F1-IACSHA high 29.0 18.3 60.4
nPowertek TTIC NPH1000 29.3 16.8 47.5
Glacialtech Igloo 5710 Silent 29.4 18.0 43.4
Thermalfly I75DUB high 29.5

16.8

68.5
Zalman CNPS9500 AT 29.6 17.3 53.3
Glacialtech Igloo 5750 Silent 29.8 18.5 35.5
Coolermaster Hyper TX2 29.9 18.8 53.7
Alpha Novatech PRE9060M92P high 29.9 18.5 51.5
Scythe Kama Cross 30.0 18.8 40.0
Akasa AK-961 30.0 18.7

60.7

Rosewill RCX-Z2-EX high 30.1 18.7 45.9
nPowertek NPH-775-1 30.1 18.8 50.1
Glacialtech Igloo 5610 Silent 30.4 17.1 44.7
Sunon Waturbo 30.6 18.3 57.5
Apack CF800 high 31.4 20.7 48.4
Thermaltake Jungle512 high 31.6 20.4 60.8
Coolage Frozen Orb F0-Z924AL high 32.0 19.9 48.9
Xigmatek AIO-S80DP high 32.4 21.4 55.0
Scythe Katana II 32.5 18.6 37.9
Rosewill RCX-Z2

32.6

19.3 59.9
Zalman CNPS7700-Cu high 32.9 19.7 50.7
Apack CF900 high 32.9 20.3 48.3
Evercool PT02-9232CP 33.3 19.9 63.3
Zalman CNPS7700-Cu LED high 33.5 20.6 49.8
Scythe Ninja Mini 33.7 19.9 41.7
Thermalright MST-977SLE 33.8 20.0 46.5
Intel Stock Pentium D high 33.8 20.7 47.5
nPowerTek SF775-2 high 34.7 21.1 64.6
Akasa AK-960E 36.1 21.4 56.3
Zalman CNPS7500-Cu LED high 36.4 22.9 50.9
Thermalfly I75DUH 37.8 22.8 48.7
Akasa AK-975CU high 38.4 23.0 47.7
Cooljag OAK-H high 38.5 22.9 55.7
Cooljag OAK-H2 high 38.6 24.1 55.6
LS Cable SHS-T700 38.7 22.8 48.5
Zalman CNPS9700NT low 47.4 29.4 27.8
Intel Stock Core 2 Duo 49.2 29.0 36.7
Glacialtech Igloo 5062 Cu Light 50.6 29.7 45.2
Glacialtech Igloo 5057 E 58.5 36.1 53.4
Spire Fourier IV SP607B3-C 63.6 18.7 60.2
Cooljag OAK-H low 95.3 54.5 29.5
150W
Thermal Test (°C)
85W
Thermal Test (°C)
Noise Level (dBA)
*Heatsinks are ranked according to the 150W thermal test results column (rise over ambient temp.). Low temperatures with low noise levels are considered best. For reference heatsinks with variable-speed fans, only the high speed (12V) fan test result is included in the comparison sheet; more detailed results reside in each specific heatsink review.

The heat output from Intel processors varies widely between single and multi-core processors, so Frostytech tests heatsinks with two thermal values that represent the upper limits of both existing CPU families; 150W and 85W.

A 150W heat load was applied by the Intel LGA775 version of FrostyTech's synthetic thermal test platform, and the Zalman CNPS9700NT heatsink maintained a rise above ambient temperature of 20.3°C (52.2dBA) at full fan speed. The PWM fan was spinning at its default speed of 2800RPM.

Next we reduced the 100mm PWM fan to around 1250RPM (or possibly a little lower, as the FanMate 2 decreases voltage and PWM fans can occasional overreact). Under these conditions the Zalman CNPS9700NT became virtually silent with a noise output of just 27.8 dBA, while temperatures rose to satisfactory 47.4°C over ambient.

In the next series of thermal tests, the Zalman CNPS9700NT was subjected to an 85W heat load; akin to a Core 2 Duo processor. The CNPS9700NT heatsink yielded a very good 12.4°C over ambient temperature result at its' default fan speed, and 29.4°C at the aforementioned reduced fan speed.

From these test results it's pretty clear that when the Zalman CNPS9700NT's fan is running at full tilt this heatsink is firmly one of the Top 10 best heatsinks for Intel or AMD processors. Noise levels (52.2 dBA) are comparable to other heatsinks in a similar ranking; moderately audible. When running with a minimum fan speed the Zalman CNPS9700NT is dead quiet, although temperatures on the Intel platform were just satisfactory in this ultra-quiet operational mode.

Bottom line, Zalman's CNPS9700NT is a potent heatsink for performance cooling. As a low noise CPU cooler it will get the job done silently, though because it's PWM compliant the computer BIOS will regulate fan speed automatically to meet the thermal needs from moment to moment. A little expensive, but recommendable because it has the room to grow with your computer and CPU choices.

Related Articles:

The Top 5 best heatsinks for low noise and low temperature are ranked here.For more reviews on the latest heatsinks and cooling solutions, rely on FrostyTech's inventory of 400+ heatsink reviews. Here are a few other articles that you might enjoy as well.

- Asus Silent Square EVO Heatsink Review
- Thermalright MST-977SLE Intel Heatsink Review
- Scythe Infinity SCINF-1000 Heatsink Review
- Xigmatek HDT-S983 Exposed Heatpipe-Base Heatsink
- OCZ Vendetta Heatsink Review
- Glacialtech Igloo 5750 Silent Heatsink Review
- Scythe Infinity SCINF-1000 Heatsink Review



 Previous Page °
Heat Sink Review Index  

Table of Contents:

 1:  Zalman CNPS9700NT Heatsink Review
 2:  360° View - Zalman CNPS9700NT Heatsink
 3:  Acoustic Sample and Heatsink Sound Levels
 4:  AMD K8 Heatsink Temperature Comparisons
 5: — Intel LGA775 Final Heatsink Temperature Comparisons

List all Zalman heat sinks that Frostytech tested?

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Time stamped: 8:45AM, 11.21.2017
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