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Corsair TX750M PSU Review

Ripple Measurements

To learn how we measure ripple, please click here.

This table includes the ripple levels we measured on the TX750M's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load16.5mV5.3mV7.9mV4.3mVPass
20% Load23.2mV6.3mV8.7mV6.0mVPass
30% Load21.3mV9.0mV17.2mV7.2mVPass
40% Load22.2mV7.1mV11.1mV8.8mVPass
50% Load25.0mV7.3mV11.9mV13.1mVPass
60% Load29.1mV7.7mV12.4mV13.2mVPass
70% Load32.1mV8.8mV15.2mV14.7mVPass
80% Load36.5mV8.7mV15.2mV17.1mVPass
90% Load43.1mV10.0mV15.3mV19.8mVPass
100% Load49.4mV14.4mV19.9mV24.9mVPass
110% Load53.7mV14.7mV20.1mV26.4mVPass
Cross-Load 124.6mV9.4mV12.5mV10.3mVPass
Cross-Load 252.5mV16.6mV20.7mV25.5mVPass
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Ripple suppression at +12V isn't particularly good given today's standards in this category. We'd like to see much lower values (less than 40mV), worst-case.

On the other hand, both minor rails perform significantly better than the +12V 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 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

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Ripple At 110-Percent Load

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Ripple At Cross-Load 1

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Ripple At Cross-Load 2

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Aris Mpitziopoulos
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.