Corsair HX1000 PSU Review

Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the HX1000's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load3.6mV4.7mV5.5mV5.1mVPass
20% Load4.5mV5.3mV6.6mV5.6mVPass
30% Load5.2mV5.8mV7.3mV6.8mVPass
40% Load6.2mV6.1mV7.7mV7.9mVPass
50% Load5.7mV6.1mV8.8mV8.6mVPass
60% Load6.1mV6.4mV9.7mV9.8mVPass
70% Load6.8mV7.3mV10.5mV11.2mVPass
80% Load7.9mV8.1mV12.1mV12.8mVPass
90% Load9.3mV8.6mV13.9mV14.2mVPass
100% Load11.9mV11.3mV16.4mV17.3mVPass
110% Load14.4mV12.2mV17.0mV19.4mVPass
Cross-Load 16.8mV8.9mV10.7mV8.4mVPass
Cross-Load 211.3mV11.0mV15.2mV16.3mVPass

Ripple suppression is excellent on every rail. The extra filtering caps on the cables surely help.

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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