The fanless1 Nightjar series power supplies have long been favorites of professionals and enthusiasts alike that require noiseless power solution with no moving parts. With increasing power demands required from modern computers, SilverStone engineers have once again created another fanless power supply with leading output level in the ST50NF.
With 500W of continuous rating, near 80 PLUS Silver efficiency, ±3% voltage regulation, single +12V rail, multiple PCI-E connectors, and full host of safety features, the ST50NF is a great choice for mission-critical systems that need to operate in noiseless or dusty environments.
High Efficiency Thermal Solution
Nightjar's highly efficient power design effectively reduces regular energy consumption and wasted heat.

Not content with just removing fans from a conventional power supply, the ST50NF was designed from the ground up with a thermal solution1 tailored specifically for fanless application. This ensures the power supply has cooler components capable of operating in higher environmental temperatures for a longer lifetime.

The Thermaltake Nightjar Fanless 500 Watt Power Supply comes with a full assortment of connectors to power your computer.

Other outstanding features of this Industrial Class power supply include:
| Input | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Input Voltage | 99V ~ 264V | ||||||||||||||||||||||||
| Input Frequency Range | 47Hz ~ 63Hz | ||||||||||||||||||||||||
| Input Current | N/A | ||||||||||||||||||||||||
| Efficiency | 84%~88% at 20%~100% loading | ||||||||||||||||||||||||
| Output | |||||||||||||||||||||||||
| Max Load |
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| Combined +3.3, +5V | 120 Watts | ||||||||||||||||||||||||
| Combined +12V | 456 Watts | ||||||||||||||||||||||||
| Line Regulation | ±1% | ||||||||||||||||||||||||
| Total Output | 500W | ||||||||||||||||||||||||
| 80 PLUS® | 80 PLUS Silver (minimum 80 PLUS Bronze guaranteed) |
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| Active PFC | Yes, PF > 0.99 at full load | ||||||||||||||||||||||||
| Cooling | Fan Less thermal solution | ||||||||||||||||||||||||
| Protection | Multiple protection design ( OCP / OVP / OPP / OTP / SCP ) |
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| Connectors and Cable Lengths | 1 x 24 / 20-Pin Motherboard connector (550mm) 1 x 8 / 4-Pin EPS / ATX 12V connector (550mm) 1 x 8/6-Pin PCIE connector (550mm) 1 x 6-Pin PCIE connector (550mm / 150mm) 6 x SATA connector (500mm / 150mm / 150mm) 6 x 4-Pin Molex connector (500mm / 150mm / 150mm) 2 x 4-Pin Floppy connector (500mm / 150mm / 150mm / 150mm |
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| Environmental | |||||||||||||||||||||||||
| Noise | 0 dba | ||||||||||||||||||||||||
| Operating Temperature | 0 ~ 45°C | ||||||||||||||||||||||||
| MTBF | 80,000+ hours at 25°C at full rated load | ||||||||||||||||||||||||
| Safety Approvals | Nemko / TUV / UL / CE / BSMI / FCC / GOST / C-tick | ||||||||||||||||||||||||
| Dimensions / Weight | |||||||||||||||||||||||||
| Dimensions (WxHxD) | 150 mm x 86 mm x 160 mm (6" x 3.5" x 6.4") | ||||||||||||||||||||||||
| Net Weight | 3.5 kg (7.7lbs) |