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Intel Stock Core 2 Duo Radial Curved Bifurcated Fin Heatsink Review
Intel Stock Core 2 Duo Radial Curved Bifurcated Fin Heatsink Review
  70%   
Abstract: The Intel RCBFH design is engineered to be cheap to produce, easy to install, and thermally efficient. This is the stock Core 2 Duo heatsink, and it is generally speaking a well designed mass-produced cooler.

 Company link  Category  Published  Author 
Intel   Cooling / Heatsinks   Jun 24, 2007   Max Page  
Home > Reviews > Page Title: Intel 775 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
Zalman CNPS9700 LED high 19.0 10.4

56.5

Thermalright Ultra-90 high 19.6 13.0 56.2
Enzotech Ultra-X high 20.0 8.5 59.1
Apack Zerotherm BTF90 21.8 12.7 52.1
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
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
Asus Arctic Square high 24.9 14.9 44.9
Akasa AK-922 (EVObue) high 25.5 15.4 60.3
Thermalfly F1-IACSHA high 29.0 18.3 60.4
Thermalfly I75DUB high 29.5

16.8

68.5
Zalman CNPS9500 AT 29.6 17.3 53.3
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
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
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
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
Thermalfly I75DUH 37.8 22.8 48.7
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
Intel Stock Pentium D low 40.3 23.9 40.5
Intel Stock Core 2 Duo 49.2 29.0 36.7
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 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 Core 2 Duo heatsink yielded a rise above ambient temperature of 49.2°C (36.7dBA) at the fans' stock speed of 1500RPM. The CPU equivalents of this test would be an Intel Pentium D / Extreme Edition or Core 2 Quad class chip.

Next, the stock Intel Core 2 Duo heatsink was tested with an 85W heat load - akin to a Core 2 Duo processor. This test resulted in a satisfactory result of 29.0°C over ambient temperature, at default fan speed. These results form the basis from which other socket 775 Intel heatsinks can be compared.

On the whole, the stock Intel Core 2 Duo heatsink performs satisfactorily on the 85W test, which is more in line with the actual thermal loads Core 2 Duo processors create.

To be fair, a thermal load of 150W is too much for this heatsink, and it is clearly not built for this specification either. Interestingly, the older stock Pentium D heatsink performs better than this heatsink, though with a little more noise. This makes sense, some Pentium 4/D models had TDP in the range of 115W-120W.

With the stock Intel Core 2 Duo heatsink held up against the other Intel LGA775 reference heatsinks Frostytech has tested it's quite evident that enthusiasts can do better by selecting a third party heatsink.

Of course, as new generations of 65W processors emerge, the need to shop for something better diminishes...

These results indicate that overall, in its default fan speed setting the stock Intel Core 2 Duo heatsink operates satisfactorily for Core 2 Duo (TDP = 85W) processors. It is ineffective when faced with a heat load of 150W, although in both cases it runs very quietly. ;-)

Related Articles:

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...

- Thermalright Ultra-90 Low Noise Heatsink Review
- Asus Arctic Square Heatsink Review
- Cooljag Falcon 92-Cu Heatsink Review
- Cooljag Falcon 92-Al Heatsink Review
- Enzotech Ultra-X Heatsink Review
- Arctic Cooling Freezer 64 LP Heatsink Review
- Rosewill RCX-Z2-EX Heatsink Review
- Scythe Mine Rev.B SCMN-1100 Heatsink Review
- Alpha Novatech PRE9060M92P Socket 775 Core 2 Duo Heatsink Review
- Scythe Katana II SCKTN-2000 Heatsink Review
- Akasa Evo Blue AK-922 Heatsink Review
- Rosewill RCX-Z3 Heatsink Review



 Previous Page °
Heat Sink Review Index  

Table of Contents:

 1:  Intel Stock Core 2 Duo Radial Curved Bifurcated Fin Heatsink Review
 2:  360° View - Intel Stock Core 2 Duo Heatsink
 3:  Acoustic Comparisons and Base Surface Quality
 4: — Intel 775 Heatsink Temperature Comparisons

List all Intel heat sinks that Frostytech tested?

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