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Item#: N82E16817256108

SILVERSTONE Tek Nightjar NJ520 520W Completely Fanless ATX12V / EPS12V 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply with Zero dBA Acoustics

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  • ATX12V / EPS12V
  • Full Modular
  • 80 PLUS PLATINUM Certified
  • 90 - 264 V 47 - 63 Hz
  • +3.3V@20A, +5V@20A, +12V@43A, +5VSB@2.5A, -12V@0.5A

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

SilverStone’s Nightjar NJ520 is a fanless power supply that offers users a whole new experience of quietness and stability. Its premium components and engineering helped it to achieve 80 PLUS Platinum level of efficiency, reducing wasted heat and enable an open grille design that can operate reliably without fan attached. This noise-less performance can be maintained with stringent electrical characteristics even under 104°F (40°C) operating environment.

As a versatile power supply, 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 PCs or workstations for specialized settings such as recording studio or sound-optimized laboratories, the Nightjar series PSUs with their consistent emphasis on quality, stability, and reliability, are sure to satisfy.



  • 1. Designed for 80 PLUS Platinum level of efficiency to reduce wasted heat and save on electricity.
80 PLUS Platinum level of efficiency
  • 2. Powerful single +12V rail design, perfect for future high-end component upgrades or overclocking.
single +12V rail
  • 3. 100% modular cable design for easy removal in a case with cable routed and tied down.
100% modular cable design
1 x 24 / 20-pin motherboard connector

1 x 24 / 20-pin motherboard connector

1 x 8 / 4-pin EPS / ATX 12V connector

1 x 8 / 4-pin EPS / ATX 12V connector

2 x 8 / 6-pin PCIE connectors

2 x 8 / 6-pin PCIE connectors

6 x SATA connectors

6 x SATA connectors

5 x 4-pin peripheral connectors

5 x 4-pin peripheral connectors

1 x 4-pin floppy connectors

1 x 4-pin floppy connectors

  • 4. ±2% regulation and low ripple & noise performance for high stability.
Tight regulation
  • 5. Fan-less thermal solution, 0dBA acoustics
Fan-less thermal solution
  • 6. 24/7 continuous power output with 104°F (40°C) operating temperature


Model No. SST-NJ520
Max. DC Output 520W
Load Range
Rail +3.3V +5V +12V +5VSB -12V
Max. (Amps) 20A 20A 43A 2.5A 0.5A
Min. (Amps) 0A 0A 0A 0A 0A
Range ±2% ±2% ±2% ±5% ±10%
Line Reg. ±1% ±1% ±1% ±1% ±2%
Ripple (mVp-p) 50mV 50mV 120mV 50mV 120mV
Combined +3.3, +5V 100W
Combined +12V 516W
Input Voltage 90 ~ 264V
Input Frequency Range 47Hz - 63Hz
PFC Active PFC. (PF > 0.99 at Full Load)
Efficiency 89% - 92% at 20% - 100% loading
MTBF 100,000 hours
Operating Temperature 32 - 104°F (0 - 40°C)
Protection Over current protection
Over power protection
Over voltage protection
Over temperature Protection
Under voltage protection
Short circuit protection
No Load Situation
Connectors 1 x 24 / 20-Pin motherboard connector (600mm)
1 x 8 / 4-Pin EPS / ATX 12V connector (650mm)
2 x 8 / 6-Pin PCIE connector (600mm)
4 x SATA connector (400mm / 120mm / 120mm / 120mm)
2 x SATA connector (300mm / 120mm) 3 x 4-Pin Peripheral connector (400mm / 120mm / 120mm)
2 x 4-Pin Peripheral connector (300mm / 120mm)
1 x 4-Pin Floppy connector (100mm)
*NJ520 is not compatible with PP05, PP05-E and PP06 cables.
Color Silver
Cooling System Fan Less thermal solution
Noise Level 0dBA
Dimensions (W x H x D) 6 x 3.3 x 6.3 inches (150 x 86 x 160mm)
Weight 5lbs (2.3kg)
Form Factor ATX
Certification 80 PLUS Platinum
Other Haswell CPU support

Learn more about the Silverstone NJ520

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the Silverstone NJ520

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5 out of 5 eggs

Pros: + Completely silent.
+ Full modular
+ Easy to install
++ Perfect for a silent HTPC, media server or workstation

Cons: - Not really a con, but I wish there were a 600W+ version of this fanless model for power-hungry builds.

Did you find this review helpful? Yes No

5 out of 5 eggsRebranded SeaSonic SS-520FL2

Pros: This is a rebranded SeaSonic SS-520FL2, which is actually a very good thing as the SS-520FL2 is n exceptionally good power supply

Cons: Sometimes it costs more than the SeaSonic SS-520FL2, sometimes you find them on sale and they cost less.

Other Thoughts: Other than the paint jobs and the warranty, this is a clone of the SeaSonic SS-520FL2, check which is cheaper on the day you want to buy

1 out of 1 people found this review helpful. Did you? Yes No

  • Gilbert A.
  • 12/1/2014 2:07:15 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsEffective little powerhouse

Pros: Silent (fanless)
Available in silver (matches my case)
Completely modular
Fits into tight spaces

Cons: Is supposed to be mounted grill face up (which I couldn't do in my build, but which doesn't seem to have had any impact given the build's power requirements)

Other Thoughts: This was selected for a fanless, 0dB build with no discreet GPU (graphics are handled by the i7 4790k CPU). Given that it only has an ATX board with 16GB of RAM, a 4790K CPU, slim slot optical drive and one SSD to power the Nightjar doesn't even get warm so I'm tolerating having it side-mounted. So far so good.

1 out of 1 people found this review helpful. Did you? Yes No

  • David P.
  • 7/13/2014 5:48:53 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWorks as expected

Pros: Quiet, easy to install

Cons: Warning that it must be in installed horizontally. My HTPC case sits horizontally and the power supply mount is vertical. I hope the heat sinks will still work as efficiently as they must to keep this unit cool.

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Item#: N82E16817256108
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