Corsair RM1000x ATX v3.1 PSU Review

Overall Performance

Here is the link to read more about this performance algorithm.

The overall performance is high enough, with not so-high differences from other high-performance units.

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17 thoughts on “Corsair RM1000x ATX v3.1 PSU Review

  1. Hello ,is load regulation and load balancing the same thing on the PSUs ? Seasonic states on their website that their say Vertex GX-1000 models got micro tolerance load regulation ,so how is this important and is it just more of a marketing thing? Thanks.

      1. Another question : do we need a new PSU with ATX 3.1 for RTX 5080/5090 for better load balancing thus preventing uneven load on the cables and not melting them or older PSUs do just fine ,for instance like ATX 2.4 PSU ? In short does ATX 3.1 PSU does a better job at load balancing? Thanks

          1. So is that correct that it does not matter if say I use 3×8 pin on the psu side versus the native 12V-2×6 cable ? What I mean is: is 12V-2×6 connector any safer than 3×8 pin connectors for load balancing and cable overheating in your opinion?

  2. in the “relative performance” image at page “overall performance”, it says lower is better. Shouldn’t it be “higher is better”?

  3. Hi, I bought this PSU for my new build and since the installation his fan makes a really annoying noise, as if it runs at 100% even in the desktop. Could you help me pls

  4. Hello,

    I am considering buying this PSU model, in order to upgrade my AM4 system (for reference – R7 5700X3D / RTX 4070 Super / 32 GB DDR4), so I checked for compatibility issues on pcpartpicker and got the following warning: “The Corsair RM1000x (2024) 1000 W Fully Modular ATX Power Supply does not provide a -12 V supply voltage. We are unable to verify if the MSI MEG X570 UNIFY ATX AM4 Motherboard requires it.”. Do you know if this Corsair PSU is compatible with my motherboard? I would be very grateful if you could advise. Thanks!

  5. Hello,

    In your article, Stand_By_230V is equal to 0.08W.
    The new Corsair RM1000x ATX v3.1 arrived to me today.
    In my case, Stand By at 237V is 21,7W. In this case, the current is 0,143 A.
    Another nuisance, if you turn off the power supply on the power supply, the consumption drops to 20.5W (current 0.142A), but there is no complete shutdown.
    The computer does not turn on, meaning it is de-energized, but the PSU is not. This is the first time I have encountered such a strange phenomenon.
    Return the power supply as faulty?

    1. Standby I measure is with the PSU NOT connected to anything. It is entirely different from what you did. Also, measuring such low wattage is tricky. You need good equipment.

      1. Thank you for your answer!
        I measure the actual power and current consumption of the Brennenstuhl EM 240. Although it is ancient, it measures quite accurately, in my opinion, the new Samsung TV in Stand By consumes less than 1 watt, it matches.
        And what about the switch, should it completely de-energize the power supply?

  6. I’m looking into getting one of these.
    But they have also downgraded the fan which is dissappointing, the previous version of the RM1000x had a magnetic levitation fan (NR140ML). Given that both versions are currently available (with the older coming in cheaper) – I am wondering if the prior version is a better purchase

  7. I bought one of these. It made a small amount of coil whine when I tested it in my old PC, but only when idling in windows (starting any app up made the noise go away completely). However on my main PC it makes no noise whatsoever, phew! I like the fan control, I have it turned to it’s lowest setting where it is still inaudible but at least this removes the heat rather than letting it radiate in to my PC case.

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