EVGA SuperNOVA GS 650 W Review

Name: EVGA SuperNOVA GS 650 W
Brand: EVGA

crmaris

on Aug 17th, 2015,

in Power Supplies.

Manufacturer: EVGA

EMC Pre-Compliance Testing »

Ripple Measurements

You will see the ripple levels we measured on the GS 650's 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 - EVGA SuperNOVA 650 GS
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
10% Load	10.1 mV	6.5 mV	20.2 mV	5.5 mV	Pass
20% Load	16.8 mV	6.6 mV	22.9 mV	7.1 mV	Pass
30% Load	23.8 mV	7.9 mV	22.8 mV	6.3 mV	Pass
40% Load	26.0 mV	9.9 mV	23.4 mV	6.8 mV	Pass
50% Load	30.7 mV	10.0 mV	24.3 mV	6.8 mV	Pass
60% Load	41.5 mV	9.4 mV	26.5 mV	7.3 mV	Pass
70% Load	50.2 mV	10.1 mV	27.7 mV	9.6 mV	Pass
80% Load	51.8 mV	10.6 mV	26.0 mV	9.9 mV	Pass
90% Load	49.4 mV	12.1 mV	27.3 mV	10.2 mV	Pass
100% Load	57.7 mV	14.0 mV	29.1 mV	11.8 mV	Pass
110% Load	62.0 mV	15.1 mV	31.3 mV	12.5 mV	Pass
Crossload 1	12.5 mV	6.5 mV	19.0 mV	11.8 mV	Pass
Crossload 2	55.3 mV	13.0 mV	31.8 mV	9.5 mV	Pass

Considering this is a Seasonic platform, ripple suppression on the +12V rail was a big letdown. Seasonic's designs are usually ripple-proof; however, such is clearly not the case here. 60 mV of ripple isn't a lot, but for a Seasonic platform, even a budget one, such a reading is mediocre. We expected much better results from this manufacturer. The competition offers jaw-dropping ripple suppression on all rails and Seasonic has to keep up, especially since their products in this category are priced similarly to those of the competition.

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.