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
Normally I'd say listen to this heatsink, but in the case of the NCU-1000, it
is a passive heatsink and so no acoustical samples need be
(high) FrostyTech Acoustic
Sampling Chamber Passive Heatsink. Therefore sound recording is not
Normally I'd say listen to this heatsink, but in the case of the NCU-1000, it is a passive heatsink and so no acoustical samples need be provided.
(high) FrostyTech Acoustic Sampling Chamber
Passive Heatsink. Therefore sound recording is not applicable.
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.
Ambient noise created by other fans for this heatsink to run within acceptable temperatures is going to hover around the 35-45 dBA range. This is pretty good all things considered. The heatsink of course, counts for none of the noise created, but does benefit from the airflow, so keep this in mind. Up next, the thermal results!
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