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Apack Zerotherm CF800 Socket 775 Heatsink Review
Apack Zerotherm CF800 Socket 775 Heatsink Review
  80%   
Abstract: It has been designed to operate quietly, with the ability to scale the speed of its translucent fan automatically and tackle heat loads as high as 130W.

 Manufacturer  Category  Published  Author 
Apack   Cooling / Heatsinks   Nov 20, 2006   Max Page  

Home > Reviews > Page: Intel LGA775 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)

Apack Zerotherm BTF90 21.8 12.7 52.1
Apack Zerotherm BTF80 22.8 13.9 51.9
Thermalfly F1-IACSHA high 29.0 18.3 60.4
Zalman CNPS9500 AT 29.6 17.3 53.3
Akasa AK-961 30.0 18.7

60.7

nPowertek NPH-775-1 30.1 18.8 50.1
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
Zalman CNPS7700-Cu high 32.9 19.7 50.7
Evercool PT02-9232CP 33.3 19.9 63.3
Intel Stock Pentium D high 33.8 20.7 47.5
Thermalfly F1-IACSHA low 36.0 28.3 35.4
Akasa AK-960E 36.1 21.4 56.3
Thermalfly I75DUH 37.8 22.8 48.7
Thermaltake Jungle512 low 37.8 22.2 53.7
Intel Stock Pentium D low 40.3 23.9 40.5
Zalman CNPS7700-Cu low 42.6 24.7 35.1
Apack CF800 low 65.5 42.2 34.6
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.

with a 150w heat load applied by the intel lga775 synthetic thermal test platform, the Apack Zerotherm CF800 heatsink achieves a very nice rise above ambient temperature of 31.4°C. The heatsink's 95mm fan was spinning at 2300RPM during these tests, and so it created about 48.4 dBA noise. Compared to the Intel Pentium D heatsink, the Apack Zerotherm CF800 was able to operate about 2°C cooler under equal thermal loads. A heat load of 150W is roughly approximate to a stressed Intel Pentium D / Extreme Edition or Core 2 Quad class processor.

The Apack Zerotherm CF800 heatsink was next tested with an 85W heat load, where it maintained a 20.7°C rise over ambient. This is identical to the results for the stock Intel heatsink.

We've also included the synthetic temperature test results for the Apack Zerotherm CF800 heatsink with the 95mm fan rotating at its slowest speed. In actual use it would never maintain an 800RPM speed when the temperatures reach this level, but since this heatsink is thermally controlled and not PWM controlled we felt it was a good comparison to include.

With its fan artificially forced to maintain a low speed of 800RPM the Apack Zerotherm CF800 heatsink operates silently at 34.6 dBA. The heatsink maintains a rise above ambient temperature of 65.5°C at 150W, and 42.2°C at the 85W heat load. At its lowest fan speed the stock Intel heatsink performs far and away better than this. To be clear though, the CF800 would not continue to maintain such a low fan speed under the aforementioned temperatures - we just wanted to see how it would react.

On the whole, Apack have managed to produce a heatsink which roughly matches the stock Intel Pentium D heatsink on the socket 775 platform. While the two coolers were equally matched at the 85W heat load, the Apack Zerotherm CF800 heatsink shows a slight advantage at 150W with its fan at full speed. Although, the temperature difference is not large enough to really justify replacing the stock Intel heatsink in question.

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For more reviews on the latest heatsinks and cooling solutions, rely on FrostyTech's inventory of 350+ heatsink reviews. Here are a few other articles that you might enjoy as well...
- Akasa AK-960E Socket 775 Heatsink Review
- nPowertek NPH 775-1 Socket 775 Heatsink Review
- Thermaltake Jungle 512 Bifurcated Fin Heatsink Review
- Evercool PT02-9232CP Bifurcated Fin Heatsink
- Thermalfly I75DUH Bifurcated Fin Socket 775 Heatsink Review
- Intel Stock Pentium D Radial Curved non-Bifurcated Fin Heatsink Review
- Thermalfly F1-IACSHA Heatsink Review
- Zalman Fatal1ty FS-C77 Heatsink Review
- Antazone ASC1000 Copper Heatsink Review
- Zalman CNPS9500 AT Socket 775 Low Noise Heatsink Review
- Gigabyte 3D Rocket II Cooler GH-PCU23-VE Heatsink
- Zalman CNPS7700-Cu Low Noise Heatsink
- Thermalright Ultra-120 Low Noise Heatsink
- Zalman CNPS8000 Low Noise Heatsink Review
- Apack ZeroTherm BTF80 Heatsink Review

 Previous Page ° Heat Sink Review Index  

Table of Contents:

 1:  Apack Zerotherm CF800 Socket 775 Heatsink Review
 2:  360° View - Apack Zerotherm CF800 Heatsink
 3:  Acoustic Comparisons and Base Surface Quality
 4: — Intel LGA775 Heatsink Temperature Comparisons

List all Apack heat sinks that Frostytech tested?

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