Specifications

The NJ520 is 80 Plus Platinum certified and Haswell ready. It is equipped with all available protection features; however, Silverstone states its maximum operating temperature to only be 40°C, although Seasonic mentions 50°C for their retail model. Silverstone was obviously looking for some more headroom since high operating temperatures can significantly affect a PSU's lifetime, especially if it is passively cooled.

The NJ520 is compact and light because it doesn't exploit huge heatsinks to use a case with excellent airflow instead. Our main complaint is its significantly lower warranty period compared to Seasonic's fanless models. Its price is also very high, which comes as no surprise given it is a fanless PSU.

The single +12V rail can deliver the PSU's full power alone, which is usually the case in modern PSUs that employ DC-DC converters to generate the minor rails. Speaking of the latter, they can only provide up to 100 W combined, which will suffice for those PCs this PSU will be called upon to power. The 5VSB rail is as strong as in other units of similar capacity.

Cables & Connectors, Power Distribution

Silverstone finally fixed the original's major downside: The fact that it only has two PCIe connectors. The NJ520 can power a SLI or Crossfire system because it comes with four PCIe connectors in total.

All cables are long enough and the distance amongst SATA connectors is fine. However, we would like its peripheral connectors to be a little further apart. There are enough SATA and peripheral connectors for the systems this unit can support. Finally, all connectors use 18AWG wires, which is as the ATX spec recommended.

Since this PSU features a single +12V rail, we do not have anything to comment on when it comes to its power distribution.