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Silverstone Nightjar SST-ST50NF

Kingwin is supposed to be next alphabetically, but there is one nuance in its specs that makes us choose this order of presentation. So, next goes Silverstone Nightjar SST-ST50NF.

The PSU comes in a rather large box that lacks a carry handle. The smaller box of its 450-watt predecessor we tested earlier had one.

Exterior Design

The Nightjar SST-ST50NF looks like a typical fanless PSU with its massive aluminum heat-spreading top and meshed side panels.

As opposed to the Enhance, the bottom panel is blank. The Nightjar SST-ST50NF also differs from the Seasonic as it has not a single modular cable.

The case of the PSU is all made of aluminum, which is a questionable solution. Aluminum makes the end product more expensive but contributes little to cooling the PSU’s components.

Like its 450-watt cousin, the 500-watt Nightjar SST-ST50NF has power and temperature indicators on the back panel. The Power indicator is orange rather than green and may be confused for a warning signal at first sight.

Circuit Design

The top panel has contact with the internal heatsink via thermal pads.

Like its junior cousin, the Nightjar SST-ST50NF has massive heatsinks covering most of its interior.

Some characteristic details indicate that this PSU shares the hardware platform with the 450-watt model from the same series.

The PSU has four input capacitors instead of the conventional one or two. There are two daughter cards with controller chips nearby.

The Nightjar SST-ST50NF employs electrolytic capacitors from United Chemi-Con.

Cables and Connectors

The Nightjar SST-ST50NF has the following cables:

  • One mainboard cable with a 20+4-pin connector (54 cm)
  • One CPU cable with a 4+4-pin connector (57 cm)
  • One graphics card cable with 6+2-pin and 6-pin connectors (50+15 cm)
  • Two cables with three PATA connectors and a floppy-drive plug on each (51+25+15+15 cm)
  • Two cables with three SATA power connectors on each (52+15+15 cm)

The length of the cables suggests that the Nightjar SST-ST50NF is targeted at full-size system cases, unlike the Enhance. However, while the selection of connectors is good, the CPU cable may turn out to be too short to be hidden behind the mainboard’s mounting plate.

Specifications

The load capacity of the most important +12V rail equals that of the lower-wattage Seasonic. However, those 44 watts that the Nightjar SST-ST50NF cannot deliver across the +12V rail match the typical load on the other rails, so that’s not a shortcoming.

The load capacity of the other power rails is as high as that of the Enhance, yet the maximum load on each rail (+3.3 and +5 volts) is only 18 amperes as opposed to the other PSUs’ 20 amperes.

The Nightjar SST-ST50NF has the lowest 80 PLUS certification in this review. It is Bronze. However, its predecessor with basic 80 PLUS certification was as efficient as 90% through a larger part of the load range.

 
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