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Price: $230.00
In Stock: Yes
SKU: fanless_power_supply

Silverstone Fanless Power Supply

Silverstone Fanless Power Supply

The Silverstone Nightjar fanless power supplies are one fanless power supply line we are proud to feature. This Silverstonetek NJ520 will provide you with optimal power without overheating your system (a problem common with other fanless power supply lines). Silverstone fanless PSUs are also highly reliable, and are our go-to standard ATX power supplies we use in fanless PC builds.

Looking for not just a fanless power supply, but a completely fanless PC?

Checkout NoFan's Fanless CPU Cooler

Check out our article on How Fanless PCs work

Check out our Fanless PCs

Silverstone Nightjar

The NJ520 Silverstone Nightjar Series fanless power supply achieves continuous power output of up to 520W. The NJ520 fanless power supply offers quiet computer enthusiasts a whole new experience of quietness and stability. The premium components and engineering in SilverStone's fanless power supply helped it to achieve 80 PLUS Platinum level of efficiency, reducing wasted heat and enable an open grill design that can operate reliably without a fan attached. This noiseless performance can be maintained with stringent electrical characteristics even under 40°C operating environment.

The NJ520 has powerful +12V output of 43A for high-end system usage and its flexible, flat modular cables make assembly easy for improved case airflow. For professionals looking to build quiet PCs or workstations for specialized settings (such as recording studio or sound-optimized laboratories), the Nightjar series power supplies - with their consistent emphasis on quality, stability, and reliability- are sure to satisfy.

SilverStone NJ520 Fanless PSU Diagram


  • Complete noiseless power supply (no fan)
  • Manufacturer: SilverStone Technology
  • Model: NJ520
  • 0 dBA
  • High efficiency with 80 PLUS Platinum certification
  • 100% modular cables
  • 520W power output
  • Strict ±2% voltage regulation and low ripple & noise
  • 24/7 continuous power output with 40℃ operating temperature
  • Class-leading single +12V rail
  • PCI-E 8pin and PCI-E 6pin connectors support
  • Server-level components
  • Support ATX 12V 2.3 & EPS 12V
  • Active PFC


The Nightjar 520 Watt is designed for 80 PLUS Platinum level of efficiency, to reduce wasted heat and save on electricity.


Nightjar SST-NJ520 Specifications
Manufacturer Silverstone Tek
Description Fanless Power Supply
Model No. Nightjar SST-NJ520
Max. DC Output 520W

Nightjar NJ520 Fanless PSU
+3.3V +5V +12V +5VSB -12V
20A 20A 43A 2.5A 0.5A
Peak (Amps)
/ / / / /
0A 0A 0A 0A 0A
Range (%)
±2% ±2% ±2% ±5% ±10%
Line Reg.(%)
±1% ±1% ±1% ±1% ±2%
50mV 50mV 120mV 50mV 120mV
Combined +3.3, +5V
Combined +12V
Input Voltage
90V - 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 , full load
Operating temperature
0 - 40°C

Over Current Protection
Over Power Protection
Over Voltage Protection
Short Circuit Protection
No Load Situation

1X 24 / 20-Pin Motherboard connector (550mm)
1X 8 / 4-Pin EPS / ATX 12V connector (550mm)
4X 8 / 6-Pin PCIE connector (550mm / 100mm)
4X SATA connector (400mm / 120mm / 120mm / 120mm)
2X SATA connector (300mm / 120mm)
3X 4-Pin Peripheral connector (400mm / 120mm / 120mm)
2X 4-Pin Peripheral connector (300mm / 120mm)
1X 4-Pin Floppy connector (100mm)

NJ520 Characteristics

  • Color: Silver
  • Cooling System: Fanless Thermal Solution
  • Noise Level: 0 dBA
  • Fanless Power Supply Dimensions: 150 mm (W) x 86 mm (H) x 160 mm (D)
  • Weight: 2.3 kg

SST-NJ520 GPU Support List

Price: $230.00