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SilverStone Nightjar NJ450-SXL PSU Review

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.

Ripple At Full Load

Ripple At 110-Percent Load

Ripple At Cross-Load 1

Ripple At Cross-Load 2

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