Antec ISK 100 Mini-ITX Case

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System Configuration:

Measurement and Analysis Tools

System temperatures and noise levels were recorded with SpeedFan and GPU-Z at idle and on load using Prime95 (large FFTs setting) and FurMark, an OpenGL benchmarking and stability testing utility.


As the ISK 100 uses an external fanless power supply, the only source of noise from the case is its 100 mm 3-pin stock fan which unfortunately is attached to the rather weak mesh panel, hanging off it with little structural support. As a result, the overall acoustic profile was rough, with several points of tonality. The bearings produced noticeable chatter, with a persistent rattle that grew with fan speed. It also produced both a high frequency buzzing and a low frequency hum.

Stock Fan Measurements
SPL @1m
SPL @0.6m
12V (high)
1880 RPM
30 dBA
34 dBA
1630 RPM
25~26 dBA
30 dBA
7.6V (low)
1450 RPM
22~23 dBA
26~27 dBA
1360 RPM
21 dBA
23 dBA
1200 RPM
18 dBA
19~20 dBA
1000 RPM
14~15 dBA
17 dBA
Measuring mic positioned 1m at diagonal angle left of top cover of case (vertical stand).

The noise level ranged from 30 [email protected] at a full 12V, down to 14~15 [email protected] at 5V. Setting the manual speed switch to 'low' put the speed at 1450 RPM, which was equal to 7.6V with the switch on high. The fan became what we consider quiet at about 6V with the switch on high.

Baseline noise with the stock fan at 6V.

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