Image: Silverstone

Noise levels are a consideration for most builders, many of whom seek silence. Silverstone has announced a new passively cooled PSU that could be the perfect solution. The NJ700 is an 80+ Titanium 700-watt power supply. With modular cables and high-quality capacitors, it’s ready for many different applications. Availability and pricing have not yet been announced.

Features

  • Fan-less thermal solution, 0 dBA acoustics
  • High-quality construction with all Japanese capacitors
  • 100% modular cables
  • Strict ±2% voltage regulation and low ripple & noise
  • 24/7 continuous power output with 45℃ operating temperature
  • Class-leading single +12V rail
  • PCI-E 8pin and PCI-E 6pin connectors support
Image: Silverstone

Specifications

Product No.SST-NJ700
Max. DC Output700W
Power density319W per liter
Model (on safety)SST-NJ700
ColorSilver (Lead-Free Paint)
Combined +3.3V & +5V100W
Combined +12V696W
Input Voltage90 ~ 264 Vrms
Input Frequency Range47Hz ~ 63Hz
PFCActive PFC (PF>0.95 at Full Load)
Efficiency90%~94% @ 10% ~ 100% loading
MTBF100,000 hours
Operating temperature0°C ~ 45°C
ProtectionOver Current Protection
Over Power Protection
Over Voltage Protection
Over Temperature Protection
Short Circuit Protection
Connectors1 x 24 / 20-Pin motherboard connector(610mm)
2 x 8 / 4-Pin EPS / ATX 12V connector(”650mm” x 2)
4 x 8 / 6-Pin PCIE connector(”750mm” x 4 )
12 x SATA connector(”450mm / 120mm / 120mm / 120mm” x 3)
6 x 4-Pin Peripheral connector (”450mm / 120mm / 120mm” x 2)
1 x 4-Pin Floppy connector(100mm)
Cooling SystemFan-less thermal solution
Form factorATX
Noise Level0 dBA
Dimension150 mm (W) x 86 mm (H) x 170 mm (D)
5.91″ (W) x 3.39″ (H) x 6.69″ (D)
Weight2.3 kg
OtherGPU Support list
Compatible with ATX12V v2.4

Load Range

+3.3V+5V+12V+5VSB-12V
Max.(Amps)20A20A58A2.5A0.3A
Peak(Amps)/////
Min.(Amps)0A0A0A0A0A
Range(%)±2%±2%±2%±2%±10%
Line Reg.(%)±1%±1%±1%±1%±1%
Ripple(mVp-p)35mV35mV40mV35mV60mV

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Peter Brosdahl

As a child of the 70’s I was part of the many who became enthralled by the video arcade invasion of the 1980’s. Saving money from various odd jobs I purchased my first computer from a friend of my...

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3 Comments

  1. Ok… raise your hand if you’re looking for a quite 700 watt power supply?

    Anyone?

    What about a quite 750 or a quite 850? More hands I imagine.

    I think Siverstone missed an opportunity by not going for a higher bar.

  2. [QUOTE=”Grimlakin, post: 26938, member: 215″]
    Ok… raise your hand if you’re looking for a quite 700 watt power supply?

    Anyone?

    What about a quite 750 or a quite 850? More hands I imagine.

    I think Siverstone missed an opportunity by not going for a higher bar.
    [/QUOTE]

    This model has no fan at all. Going bigger watts runs the risk of overheating.
    I suspect they hit a thermal envelope, since they have no fan at all for backup if temps do start to get out of hand.

    A lot of silent PSUs can shut their fan off unless temps rise too far, then they will still run the fan to keep the PSU going. Once they do so, of course, they are no longer silent.

    [URL unfurl=”true”]https://knowledge.seasonic.com/article/29-what-is-seasonic-s3fc-smart-and-silent-fan-control[/URL]

    So if you want bigger, and silent, go with one that can shut the fan off at low load — that isn’t this model. I know a lot of builds where 500-700W is still an ideal spot… although I admit, there are only a few very specific applications where I think going 100% passive is a consideration (and I would still question if it’s prudent).

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