Corsair HX750 PSU Review

crmaris August 19, 2018 Featured Tech News, Featured Tech Reviews, Power Supplies

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the HX750’s rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V, and 5VSB).

Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	5.2 mV	5.0 mV	6.0 mV	4.4 mV	Pass
20% Load	6.0 mV	6.0 mV	6.4 mV	4.7 mV	Pass
30% Load	6.6 mV	6.1 mV	7.0 mV	5.1 mV	Pass
40% Load	7.6 mV	6.4 mV	7.0 mV	5.5 mV	Pass
50% Load	8.3 mV	6.7 mV	7.6 mV	7.2 mV	Pass
60% Load	9.4 mV	7.7 mV	8.7 mV	6.8 mV	Pass
70% Load	7.7 mV	8.3 mV	8.9 mV	7.7 mV	Pass
80% Load	8.1 mV	8.4 mV	9.7 mV	8.3 mV	Pass
90% Load	8.3 mV	9.5 mV	10.6 mV	9.3 mV	Pass
100% Load	10.8 mV	10.8 mV	12.2 mV	10.4 mV	Pass
110% Load	11.5 mV	11.2 mV	12.7 mV	11.5 mV	Pass
Crossload 1	9.2 mV	10.4 mV	9.2 mV	7.6 mV	Pass
Crossload 2	10.1 mV	8.8 mV	11.6 mV	7.9 mV	Pass

This platform's ripple suppression is amazing. The extra filtering caps on the modular cables help of course.

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.