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frostytech's Intel LGA775 synthetic thermal test platform applies a 150W heat load which approximates a stressed Intel Pentium D / Extreme Edition or Core 2 Quad class processor. Once equilibrium is reached we note the rise in temperature above that of the ambient temperature. In effect, what we're doing is leveling the playing field and allowing comparisons between each heatsink in the Intel LGA775 reference list above. The far right column identifies the noise level of each cooler, and naturally the lower this value the better.
With a 150W heat load applied to it, the nPowertek NPH 775-1 heatsink produces a temperature of 30.1°C over ambient. To put that in perspective, it's actually about 3-4°C cooler than the reference Intel Pentium D heatsink!
The 80mm fan generates a moderate 50.1 dBA, which will be somewhat audible outside the computer case.
To accommodate other Intel processors which run cooler than quad-core and Extreme Edition chips, like the Intel Core 2 Duo for example, FrostyTech also tests Intel LGA775 heatsinks with an 85W heat load. In this temperature test, the nPowertek NPH 775-1 heatsink maintains a 18.8°C rise above ambient temperature result.
As socket 775 thermal solutions go, the nPowertek NPH 775-1 heatsink is a good unit. Yet, since it does not utilize a 4-pin Pulse Width Modulation (PWM) fan that can be controlled by the BIOS to manage noise, it may find itself side stepped by consumers who want a heatsink that constantly scales its fan speed to meet thermal demands. Low noise is after all the biggest trend in heatsinks this year.
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