Corsair RM750x ATX v3.1 PSU Review

Efficiency Normal, Light & Super-Light Loads

Efficiency is high enough for a Gold-certified unit on all load ranges.

Average Efficiency

The unit’s average efficiency is within the range of the Cybenetics Gold level.

Average PF

The APFC converter performs decently.

Average Efficiency 5VSB

The 5VSB rail is highly efficient.

Vampire Power

Vampire power is low.

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

  1. I am quite disappointed with the V12 of this power supply. Processor at 95w, graphics at 110w, and V12 at 11,712. What will happen when I insert a 250w graphics card? My previous 550w superflower never read below 12.

  2. Hi Aris,

    I really enjoy your content, though I rarely buy a PSU and try to keep it that way. I’m assembling a system that will consume 475w at peak CPU and GPU load (though that will only happen during a synthetic benchmark). For headroom and future-proofing, I’m planning to buy a 750w PSU. What would you recommend between an XPG Core Reactor II, Thermaltake GF3, and Corsair RMx? Is the Corsair the best choice for an Nvidia GPU given the included 12v-2×6 cable? I’m given to understand that the 6+2 to 12v-2×6 adapters are, when installed correctly, potentially better than a single 12vhpwr cable. It also seems that the Corsair is most reliable, based on consumer reviews. The XPG and Thermaltake are both 33% cheaper than the Corsair, so you could convince me to save the money but only if you felt the others could be equally reliable.

    1. Hi! I would go for the RM750x (ATX v3.1). In general, the RMx line is one of the best out there. TT, I don’t trust it so much because I cannot know from whom it is made anymore. The XPG is pretty good, but I still prefer the Corsair unit.

  3. Hi Aris,
    I got this PSU after comparing many of the models you reviewed, manly for it’s low noise output and overall good performance. However my unit has extremely loud coil whine. I got it replaced under warranty, but the new one has the same issue. I assume this is happening because the PSU is almost exclusively operating in Burst Mode, since my system is drawing very little power (Zen 5 CPU, no GPU). Installing a GPU might resolve this, but that’s not something I can do right now. What would you suggest to resolve this issue? Get a lower rated Unit? A different model? Thanks for all these great reviews and work over at Cybenetics!

    1. hm coil whine is a huge issue and also has to do with the rest system components. A lower rating PSU might help yes, but still it is mostly a trial-and-error procedure.

      1. Tanks for taking the time to reply! I will give the new RM650e a shot, since it also performed well and has low noise output. It’s a shame since I got a great deal for the RM750x at 99,99€ on Black Friday, but it is what it is.

  4. 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

  5. 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 ?

  6. 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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