EVGA 750 B3 PSU Review

Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the 750 B3's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load7.0mV6.5mV11.4mV14.0mVPass
20% Load9.2mV6.6mV11.2mV14.3mVPass
30% Load9.3mV7.5mV11.0mV13.8mVPass
40% Load10.6mV8.4mV11.7mV14.6mVPass
50% Load11.4mV10.2mV12.2mV15.2mVPass
60% Load13.0mV10.1mV13.7mV15.6mVPass
70% Load13.0mV11.4mV14.4mV17.8mVPass
80% Load13.8mV11.5mV14.9mV17.8mVPass
90% Load14.9mV13.2mV16.6mV21.8mVPass
100% Load17.2mV16.7mV18.0mV27.3mVPass
110% Load17.3mV17.0mV18.6mV29.8mVPass
Cross-Load 18.9mV8.5mV9.7mV11.9mVPass
Cross-Load 217.0mV14.7mV16.4mV25.0mVPass

EVGA's ripple suppression is excellent! Only the 5VSB rail has room for improvement, though for this rail's standards, a less-than 30mV worst-case measurement is still considered fine.

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 the 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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