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Surface Roughness Comparator: Surface finish is an important factor that we all look for when holding a new heatsink. Flipping a cooler over to see how well the base has been machined is a quick way to judge the attention to detail that was put into making it. The following FrostyTech Surface Roughness Comparator offers a concise cross section common machine surface finishes. Not every heatsink base will fit into the envelope of this gage, but it does offer a very handy set of representations. This commercially available gage has 22 machined surfaces from 2 to 500 microinches; Lapped (2, 4, and 8 µ" RA), Ground (8, 16, 32, and 63 µ" RA), Blanchard Ground (16 and 32 µ" RA), Shape Turned (32, 63, 125, 250, and 500 µ" RA), Profiled (63, 125, 250, and 500 µ" RA), and Milled (63, 125, 250, and 500 µ" RA).
Acoustic Samples: Listen to this
Heatsink!
Surprisingly, the 4000RPM fan on the Thermal Integration TI-A8736N is actually pretty noisy, weighing
in at upwards of 54.8 dB. To listen to this heatsink for yourself in
operation, be sure to click on the little headphones icon below and download the
Acoustic Sample MP3 file.
FrostyTech Acoustic Sampling
Chamber Sound Level Measurements: Listening to the actual noise a heatsink makes allows you to hear what pure numbers alone cannot get across. To further emphasize FrostyTech's reliance on cold hard facts when evaluating a heatsink, we also take Decibel readings with a sound level meter. These results may be higher than the manufacturer's listed specs, but then again these are real world measurements. Measurements are made on the dB (A) scale.
The digital sound meter measured the noise output from the Thermal Integration TI-A8736N at 54.8 dB. This is loud enough to be audible from outside the case, so you may not like this cooler for areas where low-noise is important. Up next, the thermal results.
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