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
Sunon	Waturbo		30.6	18.3	57.5
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
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
			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 version of frostytech's synthetic thermal test platform, the Thermaltake Jungle 512 heatsink produces a rise above ambient temperature of 31.6°C (60.8A) with the fan running at full speed. This is about 2°C cooler than the reference Intel Pentium D heatsink manages, but 13 dBA louder. With the big red fan rotating at 2300RPM the Jungle 512 yields a temperature of 37.8°C over ambient, with 53.7 dBA noise.

Next we'll apply a 85W heat load test which approximates an Intel Core 2 Duo, Celeron, or certain Pentium 4 processors. With this heat load, Thermaltake's Jungle 512 heatsink maintains a 20.4°C temperature over ambient (with 60.8 dBA noise) at full fan speed, and 22.2°C (53.7dBA) at its lower fan setting.

Compared to the stock Intel Pentium D reference heatsink, the Thermaltake Jungle 512 does offer slightly better thermal performance, but with a significantly larger noise penalty.

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