SilverStone Nightjar 400 W is a superb power supply, using a high-end design, based on a LLC resonant primary and DC-DC converters on the secondary. This allowed to this power supply to deliver up an impressive 617 W during our tests (due to its highly overspec’ed components), present very high efficiency between 85% and 87% (when pulling up to 400 W), voltages very close to their nominal values (below 3% of their nominal value), low noise and ripple and all protections working fine, protecting your equipment.

The absence of a fan makes this unit to be completely mute, combining with applications where silence is a must, like home theater PCs (HTPCs).

The only drawback – and this is a huge one – is its price. USD 170 for a 400 W power supply? No, thank you.