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Thermolab Micro Silencer - US$??
Thermolab offers two different petite-sized heatsinks equipped
with dual heatpipes: the Micro Silencer and Nano Silencer. The larger of
the two, the Micro, sports a large fan with a round frame giving it a higher
fan diameter than the distance between the frame's corners which is typically
used to rate a fan's size. The cooler in its entirety measures 58 mm high
and 270 grams.
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According to Thermolab,
the fan has rifle bearings, a maximum speed of 2600 RPM and a noise
rating of 35 dBA. The fan diameter is 85 mm, the equivalent of a 92
mm fan with a standard square frame.
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Both Silencers use bolts to mount, but the nuts they screw
into do not physically enter the mounting holes around the socket.
Expect it to slip around a bit while you try to bolt it down from
the back of the motherboard.
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Fan Measurements
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Voltage
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Speed
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SPL@1m
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12V
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2650 RPM
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37 dBA
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9V
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1920 RPM
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29 dBA
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7V
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1510 RPM
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20 dBA
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5V
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980 RPM
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15 dBA
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At 12V, the Micro's fan is extremely loud with its noise profile dominated
by overwhelming turbulence. At 9V, it develops an annoying, constant, low-pitched
tone. At 7V, the fan hums, and considerable bearing noise is plainly audible.
At 5V is exhibits a very dry drone, like the bearing has dried up. The acoustic
qualities are just as unpleasant as the Intel stock coolers.
Thermolab Nano Silencer - US$??
The Nano Silencer is the smallest heatsink in our roundup, weighing in
at 210 grams and measuring 39 mm high. Compared to its larger brother, the
Nano is more square — the fan has a standard 80 mm box frame and is
only 15 mm thick. The top surface of the heatsink has less of a recess compared
to the Micro.
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According to Thermolab,
the fan has rifle bearings, a maximum speed of 3000 RPM, and generates
30.5 dBA of noise. The fan measures 76 mm across.
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The underside is similar to that of the Micro Silencer.
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Fan Measurements
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Voltage
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Speed
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SPL@1m
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12V
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2570 RPM
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31 dBA
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9V
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2140 RPM
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22 dBA
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8V
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1880 RPM
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18 dBA
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7V
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1330 RPM
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15 dBA
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At 12V the fan sounds whiny and turbulent — the fan speed is the same
as the Micro, but the noise level is considerably lower (6 dBA). At 9V it
becomes much smoother, but a high-pitched hum becomes evident. At 8V, the
humming becomes more noticeable as the sound of airflow fades in the background.
At 7V it rattles but is otherwise fairly smooth.
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