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Silverstone (SST-ST40NF) 400 Watt (400W, 400Watt) NO NOISE (PFC) Fanless Power Supply

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Sale Price: $159.99
Shipping:usually same day shipping
Warranty:1 Year

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Silverstone (SST-ST40NF) 400 Watt NO NOISE (PFC) Fanless Power Supply

As a step-up from the venerable ST30NF, SilverStone’s first fan-less power supply, the newer Nightjar series ST40NF achieves its continuous power output up to 400W. This is the power level that has become the mainstream application for a new generation of silent computers. By again combining superior server-level components and advanced technical design, the ST40NF has high reliability and efficiency. It can maintain 82%~86% efficiency at 20%~100% loading, earning it 80 PLUS Bronze certification. Coupled with single PCI-E 8 pin connector and dual PCI-E 6pin connectors, the ST40NF can also support high-end graphics cards if needed. For silent enthusiasts or audio/video professionals, getting this power supply will certainly be one of the most important upgrade in completing a truly silent computing environment.


Silverstone (SST-ST40NF) 400 Watt NO NOISE (PFC) Fanless Power Supply

  1. Fan-less thermal solution, 0 dBA acoustics.
  2. Efficiency 82%~86% at 20%~100% loading with 80 PLUS Bronze certification
  3. 400W continuous power output
  4. Strict ±3% voltage regulation
  5. Single PCI-E 8pin and dual PCI-E 6pin support High-end GPU
  6. Aluminum construction
  7. Server-level components
  8. Support ATX 12V 2.3 & EPS 12V
  9. Active PFC

Silverstone (SST-ST40NF) 400 Watt NO NOISE (PFC) Fanless Power Supply

Model No.
 Max. DC Output
Load Range
+3.3V +5V +12V1 +12V2 +12V3 +12V4 +5VSB -12V -5V
20A 14A 27A / / / 2.5A 0.5A /
Peak (Amps)
/ / 31.5A / / / 3.5A / /
0A 0A 0.2A / / / 0A 0A /
Range (%)
+/-3% +/-3% +/-3% / / / +/-5% +/-10% /
Line Reg.(%)
+/-1% +/-1% +/-1% / / / +/-1% +/-1% /
50mV 50mV 120mV / / / 50mV 120mV /
 combined +3.3, +5V
130W Max
 combined +12V
 Input Voltage
99V ~ 264V
 Input Frequency Range
47Hz ~ 63Hz
Active PFC (PF>0.99 at full load)
82%~86% at 20%~100% loading
100,000 hours at 25°C (at full load)
 Operating temperature
0 ~ 40°C
Over current protection, Over power protection, Over voltage protection, Short circuit protection
1 x 24 / 20-Pin Motherboard connector.(550mm)
1 x 8 / 4-Pin EPS / ATX 12V connector.(550mm)
1 x 6-Pin PCIE connector.(500mm / 150mm)
1 x 8 / 6-Pin PCIE connector.(500mm)
6 x SATA connector.(500mm / 150mm / 150mm)
6 x 4-Pin Peripheral connector.(500mm / 250mm / 150mm)
2 x 4-Pin Floppy connector.(500mm / 250mm / 150mm / 150mm)
 Cooling System
Fan Less thermal solution
 Noise Level
0 dBA
150 mm (W) x 86 mm (H) x 160 mm (D)
3.0 kg
80 PLUS Bronze
ptional Accessories

Silverstone (SST-ST40NF) 400 Watt NO NOISE (PFC) Fanless Power Supply

   24pin motherboard and 4+4pin (8pin) ATX/EPS12V extension cables (SST-PP04)

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