SilverStone Nightjar NJ450-SXL PSU Review

crmaris August 9, 2018 Featured Tech News, Featured Tech Reviews, Power Supplies

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the NJ450-SXL’s rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).

Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	5.0 mV	7.0 mV	9.5 mV	12.2 mV	Pass
20% Load	14.5 mV	8.4 mV	10.2 mV	13.2 mV	Pass
30% Load	10.4 mV	9.7 mV	10.6 mV	14.2 mV	Pass
40% Load	11.2 mV	10.4 mV	10.6 mV	15.0 mV	Pass
50% Load	12.7 mV	12.5 mV	11.1 mV	15.7 mV	Pass
60% Load	14.0 mV	13.9 mV	13.4 mV	16.5 mV	Pass
70% Load	14.9 mV	13.6 mV	11.9 mV	16.9 mV	Pass
80% Load	14.8 mV	17.1 mV	15.4 mV	17.7 mV	Pass
90% Load	16.5 mV	18.9 mV	14.6 mV	18.9 mV	Pass
100% Load	17.7 mV	19.6 mV	17.2 mV	19.4 mV	Pass
110% Load	18.3 mV	20.2 mV	15.2 mV	20.6 mV	Pass
Crossload 1	11.8 mV	9.0 mV	10.3 mV	6.5 mV	Pass
Crossload 2	18.7 mV	17.7 mV	13.6 mV	20.8 mV	Pass

The ripple suppression is excellent on all rails, without using modular cables with in-line caps.

Ripple Oscilloscope Screenshots

The following oscilloscope screenshots illustrate the AC ripple and noise registered on the main rails (+12V, 5V, 3.3V and 5VSB). The bigger the fluctuations on the screen, the bigger the ripple/noise. We set 0.01 V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.