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Intel Stock Pentium D Radial Curved non-Bifurcated Fin Heatsink Review
Intel Stock Pentium D Radial Curved non-Bifurcated Fin Heatsink Review
  80%   
Abstract: Intel's own Radial Curved non-Bifurcated Fin Heatsink (RCBFH) reference solution is a fairly well designed cooler.

 Company link  Category  Published  Author 
Intel   Cooling / Heatsinks   Nov 11, 2006   Max Page  
Home > Reviews > Page Title: 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
Sunon Waturbo 30.6 18.3 57.5
Zalman CNPS7700-Cu high 32.9 19.7 50.7
Intel Stock Pentium D high 33.8 20.7 47.5
Thermalfly F1-IACSHA low 36.0 28.3 35.4
Intel Stock Pentium D low 40.3 23.9 40.5
Zalman CNPS7700-Cu low 42.6 24.7 35.1
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 we've settled on two values which represent the upper limit of both existing CPU families. With a 150W heat load applied by the Intel LGA775 version of FrostyTech's synthetic thermal test platform, the stock Intel Pentium D heatsink yields a rise above ambient temperature of 33.8°C (47.5dBA) at the fans' stock speed of 2600RPM. The CPU equivalents of this test would be an Intel Pentium D / Extreme Edition or Core 2 Quad class chip. At the reduced fan speed of 800-1000RPM, temperatures rise to 40.3°C over ambient and noise output drops to 40.5dBA.

Next, the stock Intel Pentium D heatsink was tested with an 85W heat load. This test resulted in a nice 20.7°C rise over ambient temperature at full fan speed, and 23.9°C at the heatsinks' its lowest fan setting. These results form the basis from which other socket 775 Intel heatsinks can be weighed against.

On the whole, the stock Intel Pentium D heatsink performs quite well for its compact size, light weight, and simple materials of construction (aluminum and copper).

When held up against some of the more advanced socket 775 heatsinks facing the 150W test, its' clear that enthusiast users can find significantly better thermal solutions. The Apack Zerotherm BTF90 for instance, yields a temperature result 12°C lower... Looking at the results for the 85W test, the situation is a little closer; the difference between full and low fan speed settings is 3°C.

These results indicate that overall, in its default fan speed setting the stock Intel Pentium D heatsink operates at comparably quiet noise levels while maintaining generally good thermal results.

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 Previous Page °
Heat Sink Review Index  

Table of Contents:

 1:  Intel Stock Pentium D Radial Curved non-Bifurcated Fin Heatsink Review
 2:  360° View - Intel Stock Pentium D Heatsink
 3:  Acoustic Comparisons and Base Surface Quality
 4: — Intel LGA775 Heatsink Temperature Comparisons

List all Intel heat sinks that Frostytech tested?

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