EVGA SuperNOVA 650 G1+ PSU Review: Efficient And Silent

Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the 650 G1+’s rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load8.2mV11.9mV9.5mV7.2mVPass
20% Load9.7mV13.4mV12.8mV9.2mVPass
30% Load11.1mV15.1mV16.3mV11.3mVPass
40% Load11.5mV16.0mV18.1mV12.4mVPass
50% Load13.3mV16.7mV20.5mV13.2mVPass
60% Load14.1mV17.4mV22.1mV14.2mVPass
70% Load15.9mV18.3mV24.1mV15.3mVPass
80% Load16.1mV19.6mV27.2mV18.1mVPass
90% Load18.5mV21.9mV30.0mV22.5mVPass
100% Load19.0mV24.6mV32.3mV27.9mVPass
110% Load19.9mV29.4mV35.3mV38.1mVPass
Cross-Load 110.7mV14.3mV16.2mV9.0mVPass
Cross-Load 219.5mV25.2mV30.0mV29.6mVPass

Ripple suppression was very good at 12V, and merely satisfactory on the 5V and 5VSB rails. Moreover, we would like to see less than 30mV under full load on the 3.3V rail.

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-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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