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TESTING
System Configuration:
Measurement and Analysis Tools
System temperatures and noise levels were recorded with SpeedFan and GPU-Z
at idle and on load using CPUBurn (K7 setting) and FurMark, an OpenGL
benchmarking and stability testing utility.
Baseline Noise
|
Stock Fan Noise Level
|
|
Fan
|
SPL @1m (dBA)
|
|
5V
|
7V
|
9V
|
12V
|
|
Rear
|
<11
|
15
|
18
|
22~23
|
|
Front (upper)
|
<11
|
14~15
|
17
|
21~22
|
|
Front (lower)
|
<11
|
14
|
17
|
22
|
|
Combined
|
12~13
|
17
|
21~22
|
26~27
|
|
Measuring mic positioned 1m at diagonal angle left/front
of case.
|
Cases often ship with fans that produce different levels of noise which makes
running them all off the same fan controller undesirable. The Deep Silence 1
doesn't suffer from this problem; all its fans were well-matched. At various
voltages, the larger 140 mm rear fan generated a similar level of noise as the
120 mm models at the front. The combined noise level of the three was moderate,
26~27 dBA@1m at full speed. The fan controller's minimum setting was approximately
equivalent to 5V, so the stock fans can be conveniently turned down to an almost
inaudible 12~13 dBA@1m.
The three fans also shared a similar pleasant acoustic character. They did
suffer from slight tonality but only at close proximity. Boxed up inside the
case, they sounded very smooth and unobtrusive.
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