Seasonic Snow Silent 750 W Review

Name: Seasonic Snow Silent 750 W
Brand: Seasonic

crmaris

on Jul 8th, 2015,

in Power Supplies.

Manufacturer: Seasonic

Performance Rating, Performance per Dollar, Noise & Efficiency Rating »

Ripple Measurements

You will see the ripple levels we measured on the rails 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 - Seasonic Snow Silent-750
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
10% Load	12.0 mV	10.6 mV	13.5 mV	5.9 mV	Pass
20% Load	16.0 mV	11.2 mV	13.9 mV	6.4 mV	Pass
30% Load	18.9 mV	11.6 mV	13.9 mV	6.6 mV	Pass
40% Load	19.1 mV	13.0 mV	13.5 mV	7.7 mV	Pass
50% Load	20.9 mV	12.1 mV	14.2 mV	8.2 mV	Pass
60% Load	21.3 mV	12.6 mV	14.4 mV	9.7 mV	Pass
70% Load	22.6 mV	12.9 mV	14.9 mV	10.3 mV	Pass
80% Load	22.3 mV	13.8 mV	15.0 mV	11.4 mV	Pass
90% Load	23.5 mV	13.5 mV	15.7 mV	12.8 mV	Pass
100% Load	25.2 mV	14.5 mV	16.5 mV	14.0 mV	Pass
110% Load	27.8 mV	15.8 mV	17.9 mV	15.5 mV	Pass
Crossload 1	17.0 mV	14.1 mV	16.2 mV	28.0 mV	Pass
Crossload 2	25.4 mV	12.7 mV	14.6 mV	14.0 mV	Pass

Ripple performance was perfect on all rails, proving yet again that Seasonic's designs are ripple-proof.

Ripple at Full Load

You can see the AC ripple and noise 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. We set 0.01 V/Div (each vertical division/box equals 0.01 V) as the standard for all measurements.