SilverStone NJ450 450W Fanless Power Supply Review

SilverStone is no stranger to small form factor PC power supplies as it is the most complete supplier of these to the enthusiast PC marketplace. Today SilverStone is adding complete silence to these SFF PSUs with the 450 watt Nightjar. Excellent efficiency makes silence easier, but can the Nightjar stand up to an extremely hot case?


SilverStoneTek is a company best known for its high quality cases but its product lines extend into other components such as cooling, power, fans, storage, and so on. As a company, Silverstone has built up this impressive product repertoire in a very short time having been founded in 2003. Today, however we are interested in its power supplies which are comprised of the Strider, SFX, Nightjar, Gemini, and Zeus model lines that range from 300W to 1500W DC output. For this review, we are looking at the 450W model (SST-NJ450) in the Nightjar series. This power supply is produced in conjunction with Enhance.

Enhance Electronics Co. Ltd. was founded almost 30 years ago in 1986. While a major power supply OEM Enhance is not nearly as well known to most users as some other OEMs as its core business focus has been outside of the desktop market in areas such as servers, embedded, and telecom markets. However, its products have started to surface in the US consumer realm in the last year or so under the likes of SilverStone, Silverpower, Antec, Cooler Master, and GIGABYTE, as well as the occasional Enhance branded model.

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Small and Silent

The SilverStone NJ450 is the 3rd fanless power supply we have seen from SilverStone and one of the relative few fanless units we have seen over the years at all. Fanless power supplies are an interesting group as these certainly appeal to niches like quiet cooling aficionados, HTPC applications, and such. However, in order to get a quality unit that will function under extreme stresses without a fan to cool it also means that, generally, the unit has to be a good performer as well. That makes these units also somewhat interesting to enthusiasts and folks looking for high quality units as well, even if sound isn't their most important criteria. In the past, the Nightjar units we have seen have been great units in this very mold we have just described. The question today is then, obviously, does the NJ450 in its reduced size formfactor (SFX-L versus ATX/EPS) continue to fit that mold? Before moving on to see, what does SilverStone have to say about this unit:

SilverStone creates another milestone for small form factor PCs once again with a Nightjar fanless power supply entry, the NJ450-SXL. In pursuit of crafting the ultimate SFX-class sized silent PSU, SilverStone engineers employed premium components and innovative engineering to achieve the first ever fanless SFX-L design. With its 80 PLUS Platinum level of efficiency reducing wasted heat, this noise-less unit can maintain stringent electrical performance up to 40C operating environment while delivering powerful +12V output of 37.5A for high-end system usage. Included with the NJ450-SXL is a set of flexible, flat modular cables designed for small form factor PCs to make assembly easy and to improved case airflow. For professionals and SFF enthusiasts looking to build compact PCs or workstations for specialized settings such as recording studio or sound-optimized laboratories, the NJ450-SXL with its quality, stability, and reliability, are sure to satisfy.

With a positioning and marketing set very similar to what we saw with the previous Nightjar units but a bit more focus on this units tiny footprint, we have a rather good idea where this unit is aiming to land. So, let's move on and see what we have to look forward to when we purchase the SilverStone NJ450 power supply in terms of documentation, accessories, cable count, rail layout, output characteristics, and general build quality this will become clear.