Corsair RM750x ATX v3.1 PSU Review

Load Regulation

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 4.417A 1.977A 2A 1.006A 75.009 84.949% 0 <6.0 47.17°C 0.973
12.090V 5.059V 3.3V 4.97V 88.298 40.48°C 115.16V
20% 9.850A 2.967A 3.003A 1.209A 149.974 89.158% 0 <6.0 46.72°C 0.987
12.087V 5.058V 3.297V 4.964V 168.213 40.65°C 115.13V
30% 15.658A 3.461A 3.505A 1.412A 224.977 90.917% 0 <6.0 48.22°C 0.993
12.065V 5.057V 3.295V 4.958V 247.451 41.41°C 115.11V
40% 21.464A 3.956A 4.009A 1.616A 300.066 91.264% 0 <6.0 48.97°C 0.99
12.060V 5.057V 3.293V 4.952V 328.79 41.86°C 115.08V
50% 26.884A 4.946A 5.015A 1.82A 374.651 91.076% 0 <6.0 51.34°C 0.99
12.057V 5.056V 3.291V 4.945V 411.359 42.01°C 115.06V
60% 32.346A 5.937A 6.023A 2.001A 449.46 90.727% 442 6.4 42.81°C 0.992
12.049V 5.054V 3.288V 4.941V 495.399 56.93°C 115.04V
70% 37.808A 6.929A 7.033A 2.229A 524.514 90.232% 442 6.4 43.12°C 0.993
12.045V 5.053V 3.285V 4.936V 581.296 58.81°C 115.02V
80% 43.337A 7.918A 8.041A 2.333A 599.695 89.583% 442 6.4 43.61°C 0.994
12.040V 5.052V 3.283V 4.931V 669.431 60.95°C 115V
90% 49.202A 8.415A 8.534A 2.436A 674.707 88.924% 723 20.9 44.06°C 0.994
12.036V 5.051V 3.281V 4.926V 758.746 58.82°C 114.97V
100% 54.879A 8.912A 9.06A 3.048A 749.935 88.148% 896 28 45.88°C 0.995
12.031V 5.049V 3.278V 4.923V 850.766 58.33°C 114.95V
110% 60.417A 9.904A 10.165A 3.051A 824.97 87.26% 997 31.1 46.84°C 0.995
12.027V 5.049V 3.275V 4.917V 945.41 59.37°C 114.92V
CL1 0.116A 17.872A 18.122A 0A 151.294 82.967% 442 6.4 41.8°C 0.989
12.081V 5.053V 3.288V 4.952V 182.357 54.66°C 115.12V
CL2 0.115A 19.776A 0A 0A 101.396 82.428% 442 6.4 40.36°C 0.984
12.094V 5.056V 3.302V 4.965V 123.011 51.97°C 115.13V
CL3 0.115A 0A 20.062A 0A 67.389 76.591% 441 6.4 40.96°C 0.973
12.090V 5.067V 3.29V 4.96V 87.988 50.52°C 115.15V
CL4 62.265A 0A 0A 0A 749.699 89.043% 922 28.9 45.15°C 0.995
12.041V 5.056V 3.286V 4.929V 841.956 56.13°C 114.94V

Load regulation is tight on all rails.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 7.4 mV 5.0 mV 4.0 mV 6.0 mV Pass
20% Load 12.3 mV 5.2 mV 4.2 mV 6.2 mV Pass
30% Load 14.2 mV 5.5 mV 4.6 mV 6.4 mV Pass
40% Load 11.1 mV 5.9 mV 4.9 mV 7.8 mV Pass
50% Load 11.1 mV 5.7 mV 5.5 mV 7.6 mV Pass
60% Load 11.2 mV 6.5 mV 5.9 mV 8.6 mV Pass
70% Load 12.0 mV 6.8 mV 6.5 mV 8.4 mV Pass
80% Load 12.9 mV 6.9 mV 10.4 mV 8.3 mV Pass
90% Load 13.4 mV 7.5 mV 11.4 mV 8.5 mV Pass
100% Load 19.2 mV 8.7 mV 12.2 mV 14.8 mV Pass
110% Load 20.1 mV 8.5 mV 12.8 mV 14.2 mV Pass
Crossload 1 12.0 mV 6.8 mV 14.2 mV 8.3 mV Pass
Crossload 2 7.3 mV 6.5 mV 5.4 mV 8.3 mV Pass
Crossload 3 7.7 mV 5.2 mV 13.6 mV 8.6 mV Pass
Crossload 4 19.8 mV 7.9 mV 7.2 mV 8.7 mV Pass

Ripple suppression is good overall.

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10 thoughts on “Corsair RM750x ATX v3.1 PSU Review

  1. I just order this, but i cant get the Seasonic out of my head, is it worth another 20 usd over this one? Im very casual gamer and will be going in a 13600+4070 combo hopefully

  2. Hi, on page 8 “protections” it says 1046w for the OPP, but how is that 123% of 750w ? It would be 123% for a 850W unit, but for a 750W unit 1046W is 139.5%. If the OPP is set at 123%, then shouldn’t that be 922.5W ?

  3. Thank you for the detailed review and your time spent for testing the units.
    I just bought this unit on Amazon during BlackFriday deal because of good result in your test.

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