Average Noise
The PSU’s average noise output is low at both voltage inputs.
Fan Noise & Speed Maps @ 28-32 °C – 115V
Typically for a CWT platform, the semi-passive operation ends when you push the minor rails hard. Corsair also has the max combined power of the minor rails set high, at 150W, while most modern platforms keep it at 100W, so they have an advantage in these tests. In any case, at up to 640W, the PSU’s noise is kept below 20 dBA, so it won’t bother you. The 30 dBA mark is passed at around 810W, and there is a very small region at 860-895W with noise between 35-40 dBA.
Fan Noise & Speed Maps @ 28-32 °C – 230V
The 230V fan noise profile has some slight differences from the 115V one. The semi-passive mode lasts about the same, check the fan speed charts, and the 30 dBA mark is passed at 790W. Nonetheless, the small region with over 35 dBA noise that exceeds at 115V vanishes at 230V.
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
I would buy the new one. The ML fan was a bit noisy with the specific fan speed profile.
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.