Rosewill SilentNight 500 W Review

Name: Rosewill SilentNight 500 W
Brand: Rosewill

crmaris

on Jan 2nd, 2013,

in Power Supplies.

Manufacturer: Rosewill

Performance Rating & Performance per Dollar »

Ripple Measurements

You will see the ripple levels that we measured on the main rails of the SilentNight-500 in the following table. The limits are, according to the ATX specification, 120 mV (+12V) and 50 mV (5V, 3.3V, and 5VSB).

Ripple Measurements Rosewill SilentNight-500
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	15.6 mV	10.2 mV	11.0 mV	6.3 mV	Pass
40% Load	19.7 mV	11.3 mV	13.6 mV	7.2 mV	Pass
50% Load	21.4 mV	11.3 mV	14.5 mV	9.5 mV	Pass
60% Load	23.8 mV	11.2 mV	14.8 mV	9.4 mV	Pass
80% Load	29.4 mV	12.4 mV	18.9 mV	10.7 mV	Pass
100% Load	37.1 mV	13.0 mV	19.0 mV	12.8 mV	Pass
110% Load	39.8 mV	14.3 mV	20.9 mV	12.9 mV	Pass
Crossload 1	24.7 mV	13.1 mV	16.9 mV	6.1 mV	Pass
Crossload 2	31.9 mV	10.7 mV	14.4 mV	8.9 mV	Pass

Ripple suppression on all rails is very good and is especially excellent on the minor rails. Super Flower products and more specifically this platform always registered low ripple on all tests we conducted in previous reviews, so we pretty much expected such a performance from the SilentNight-500 on these tests.

Ripple at Full Load

In the following oscilloscope screenshots, you can see the AC ripple and noise that the main rails registered (+12V, 5V, 3.3V, and 5VSB). The bigger the fluctuations on the oscilloscope's screen, the bigger the ripple/noise. For all measurements, we set 0.01 V/Div (each vertical division/box equals 0.01 V) as standard.