Silverstone Strider Essential ST50F-ES 500 W Review

Name: Silverstone Strider Essential ST50F-ES 500 W
Brand: SilverStone

crmaris

on Apr 15th, 2013,

in Power Supplies.

Manufacturer: SilverStone

Performance Rating & Performance per Dollar »

Ripple Measurements

You will see the ripple levels that we measured on the main rails of the ST50F-ES 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 Silverstone ST50F-ES
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	13.0 mV	12.1 mV	13.2 mV	12.5 mV	Pass
40% Load	18.6 mV	18.3 mV	21.9 mV	19.3 mV	Pass
50% Load	20.7 mV	21.0 mV	25.1 mV	23.5 mV	Pass
60% Load	22.5 mV	22.7 mV	27.7 mV	28.1 mV	Pass
80% Load	35.2 mV	27.6 mV	35.6 mV	35.5 mV	Pass
100% Load	45.8 mV	30.1 mV	40.4 mV	43.1 mV	Pass
110% Load	52.0 mV	33.5 mV	43.5 mV	47.8 mV	Pass
Crossload 1	18.2 mV	32.8 mV	27.2 mV	11.7 mV	Pass
Crossload 2	38.5 mV	33.8 mV	39.7 mV	42.5 mV	Pass

Ripple suppression at +12V is very good for a budget unit, not a high-end unit, and is good enough at 5V. Ripple at higher loads is on the high side on the 3.3V and 5VSB rails, and we think that a little better performance here would significantly help this PSU achieve a much higher performance rating. Nevertheless, since all minor rails register noticeably lower ripple than the maximum allowed, we don't have much to complain about, especially at such a price.

Ripple at Full Load

You can see the AC ripple and noise that the main rails registered (+12V, 5V, 3.3V, and 5VSB) in the following oscilloscope screenshots. 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.