Nowadays the amount of people prefering a silent computer system is growing and growing. For
instance people who have a home theatre PC in their living room mostly want it to be silent.
The subject of this review is Silverstone's SST-ST30NF Power Supply, which is entirely
passively cooled by heatsinks. Since it contains no fans this PSU generates 0dBA background
noise, and thus on first sight it seems to be ideal for silent computer systems.
A few months ago I already reviewed a silent PSU from Silverstone, the
Silverstone SST-ST35F-G02
350W Power Supply which was a power supply with a big silent 120mm fan.
The box included the following items; the power supply, a power cable, a manual and a
mounting bracket.
Specifications
High efficiency power solution.
Optimum quality standard.
Classic design in style and tasteful shape of
Aluminum casing.
Supports two serial ATA Connector
Without fan
Background noise around 0 dBA.
Heat pipe with heat sink in ALuminum case.
Assumes PC stability
Indicator light to show state of PSU
Active PFC
| Color |
Silver
|
| MAX Power |
250W(100V~240V) / 300w(180V~240V)
|
| Dimension |
150mm(W) x 140mm(L) x
86mm(H) |
| Cooling |
Without Fan
|
| Acoustic |
0 dBA |
|
3.3 V & 5 V combine load 170W
|
Environmental
Specification
| Operation |
Temp |
0C~25C |
Relative
Humidity
non- condensing
|
20~90% RH
non-condensing |
| Storage |
- 40C~70C |
5 ~ 95 % RH
non-condensing |
|
Operating
/Storage
Altitude
| 10,000 /
40,000FT |
| MTBF |
100,000HRS |
| Safety Approvals |
UL/CUL , CB
, TUV , |
| EMC Regulation |
FCC , CE |
Electrical Specification
| Input
Voltage |
100 ~ 127 / 200 ~ 240 VAC
Manual select switch
|
| Frequency |
27 ~ 500 Hz un-modulated
|
|
Input Current
|
6A @ 115 VAC
3A @ 230 VAC
|
Output Specification
a. Input Voltage 200V~240V
|
|
Minimum
Load
|
Maximum
Load
|
|
+5VDC
|
1A
|
25A
|
|
+3.3VDC
|
0.8A
|
23A
|
|
+12VDC
|
0.5A
|
18A
|
|
-12VDC
|
0A
|
0.7A
|
|
5VSB
|
0A
|
1.5A
|
During operation the maximum load shall not exceed 300W. The total load on
+5V and +3.3V shall not exceed 180W. The total load on +5V and +12V shall not
exceed 35A.
b. Input Voltage 100V~120V
|
|
Minimum
Load
|
Maximum
Load
|
|
+5VDC
|
1A
|
21A
|
|
+3.3VDC
|
0.8A
|
20A
|
|
+12VDC
|
0.5A
|
17A
|
|
-12VDC
|
0A
|
0.7A
|
|
5VSB
|
0A
|
1.5A
|
During operation the maximum load shall not exceed 250W. The total load on +5V and +3.3V
shall not exceed 140W. The total load on +5V and +12V shall not exceed 30A.
Something strange is that according to the manual this PSU delivers a maximum of 300W when
the input voltage is 200V~240V, but only 250W when the input voltage is 100V~120V. The
maximum current on the 3.3V, 5V and 12V lines is also lower when the input voltage is
100V~120V.
I don't know the reason of this, I asked it to Silverstone, as soon as I receive their
answer I'll update the review.
