SilverStone NJ600 600W Fanless Power Supply Review

This content was originally commissioned by and produced for [H]ardOCP. It has been generously released to the author for publication by Kyle Bennett.

SilverStone NJ600

SilverStoneTek is a company best known for its high quality cases but their product lines extend into other components such as cooling, power supplies (of various model lines that range from 300W to 1350W in DC output), fans, and storage solutions. Silverstone has built up this impressive product repertoire since its founding in 2003. For this review, we are looking at the 600W model SST-NJ600 in the Nightjar series which is produced in conjunction with Seasonic.

Seasonic is one of the older companies producing consumer power supplies having been founded in 1975 and entering the PC power supply production market in 1980. During that more than 40 years as a company, Seasonic has cultivated lines of power supplies that are today some of the standard bearers for efficiency and quiet computing. This focus, and its reputation for quality, has lead to an explosion in production as Seasonic can be found providing OEM services on various model lines for Antec, XFX, Corsair, PC Power and Cooling, and of course under its own Seasonic brand.

The Strong Silent Type

The SilverStone NJ600 is the first power supply we have seen from SilverStone, it is the first fanless power supply we have seen, and, well, it is just the first power supply we have seen at all here at TheFPSReview. That said, while there a lot of firsts here today, this is not SilverStone’s first rodeo and unique form factors, high power densities, and unique cooling schemes (including fanless units like NJ450, ST500NF, NJ520) are things that SilverStone has been successful with over the years. However, today, we see the NJ600 is coming in at 600W which is one of the larger fanless units on the market. So, while the general pedigree of SilverStone fanless power supplies and ingenuity is there, this unit has a rather large hill to overcome. Before moving on to see if the NJ600 can overcome this though, what does SilverStone have to say about this unit:

SilverStone’s Nightjar NJ600 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 Titanium 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 40C operating environment.

As a versatile power supply, NJ600 has powerful +12V output of 50A 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.

Let’s move on now and see what we can expect when a user purchases the SilverStone NJ600 power supply in retail in terms of documentation, accessories, cable count, rail layout, output characteristics, and general build quality.

Paul Johnson
Paul is a long time PC hobbyist and tech enthusiast having gotten his start when he broke his first C64 quickly followed by breaking his first IBM XT. Most notably however, for 12 years, he served as the Power Supply Editor for one of the truly early, groundbreaking, and INDPENDENT PC enthusiast sites ([H]ardOCP) until its mothballing in April of 2019. Paul now brings the same flair and style of his power supply reviews to

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