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.

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...

- Zalman Fatal1ty FS-C77 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
- OCZ Tempest Heatsink Review
- Verax Helado PWM-T Low Noise Heatsink
- Apack ZeroTherm BTF80 Heatsink Review
- Apack ZeroTherm BTF90 Copper Heatsink Review
- Verax Quattro 1 Ultra-Quiet Heatsink Review
- AVC Z7U7414001 Athlon64 Socket AM2 / 939 Heatsink Review
- Cooljag SFO-Q Socket AM2 / 939 Heatsink Review
- Zalman CNPS9500-AM2 Socket AM2 Low Noise Heatsink
- Antazone ASC1000 Copper Heatsink Review
- Spire VertiCool II SP601B3 AMD Athlon64 Heatsink
- Scythe Samurai SCSM-1000 Heatsink Review
- Gigabyte 3D Rocket Cooler-Pro PCU22-VG Heatsink Review
- Thermalfly F1-IACSHA Heatsink Review