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TESTING
As the case interior is almost identical to the RV02, and there are no changes
to the exterior/frame to affect thermal performance, we opted not to run the
FT02 through our usual, rigorous testing procedures. For thermal results, see
our Raven Two review;
there should be no appreciable difference between the two.
Though the fans included are the same as the RV02, we tested the baseline noise
of the case, as the padded side panels, lack of a side window and case feet
could create changes in acoustics.
BASELINE NOISE
Noise measurements were made of the case with the stock fans mounted normally
and spinning inside at various speeds. The air cavity resonances inside a case
amplify fan noise, as do any vibrations transferred from the fans into the case,
so these measurements can be regarded as the baseline SPL levels for the case.
Adding components can only increase the noise.
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SilverStone Fortress FT02B Baseline Noise
Measuring mic positioned 1m at diagonal angle left/front of case
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12cm fan
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18cm fan front
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18cm fan mid
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18cm fan back
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SPL
(dBA@1m)
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FT02
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RV02
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9V-750rpm
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low
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low
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low
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19
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19
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full speed
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low
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low
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low
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21
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20
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any speed
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high
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low
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low
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23~24
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23
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any speed
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low
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high
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low
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23
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N/A
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any speed
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low
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low
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high
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23
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23
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any speed
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high
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high
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low
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27
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26
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any speed
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low
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high
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high
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26~27
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26
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any speed
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high
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low
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high
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27
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26
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any speed
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high
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high
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high
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30
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28~29
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Like the Raven Two, the perceived noise was moderate even with all fans at
full speed. The overall character was smooth and benign. The only consistent
difference between the baseline noise of the RV02 and FT02 seems to occur when
two or more of the intake fans are set to high speed. The FT02 measured about
a decibel higher, possibly as its 180mm fans face an aluminum floor while the
RV02's fans faced the carpet of our anechoic chamber. In any event the difference
is probably not possible to hear without a very close A/B comparison. A single
dB is within our margin of error due to the many variables of acoustic testing.
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