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Interested in reviews of Corsair RM850x ATX 3.1? It got 4.9 out of 5 stars from our customers. Find specific customer reviews of Corsair RM850x ATX 3.1 below. We will appreciate if you also share your experiences with Corsair RM850x ATX 3.1 after purchasing.
I've been using the power supply for just under 14 days and haven't noticed any problems so far. It's quiet, and in automatic mode, the fan doesn't spin at all with a power draw of up to approximately 400W. However, I did notice that the power supply gets quite hot, so I've manually set the fan to a low speed. It's practically inaudible, and I believe this will extend the lifespan of the components inside the power supply. I can recommend it. The power supply now stays cool. I run the power supply myself under a load of up to about 500W, so I have plenty of power reserve for any future upgrades. Installation was trouble-free. I was worried about the cables being stiff, but that wasn't the case at all. The cables are pleasantly soft, flexible, and easy to work with. In some reviews, I also read about coil whine. But my unit is completely silent. So far, I'm satisfied with the power supply.
Easy installation
Sufficient power
Quiet
Well flexible cables
None yet
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Milan, Kolín
Rated 02/07/2026, variant Corsair RM850x ATX 3.1
Verified purchase
silent
The pack includes cable ties and screws for mounting the power supply
provides excellent coverage at the tips
the problems with USB power cuts are now a thing of the past
nothing
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Petr, Zlín 1
Rated 22/05/2026, variant Corsair RM850x ATX 3.1
Verified purchase - review from a price comparison website
clear choice
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Daniel, Praha 1
Rated 18/05/2026, variant Corsair RM850x ATX 3.1
Verified purchase
Absolutely silent
No whistling coils
Quality cabling
Overall satisfaction (use for RTX 4080 SUPER and open Intel I7 11700F)
NONE!
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Petr, Zliv
Rated 15/04/2026, variant Corsair RM850x ATX 3.1
Verified purchase - review from a price comparison website
Time will tell
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Anonymous customer
Rated 09/03/2026, variant Corsair RM850x ATX 3.1
Verified purchase
V režime ZeroRPM sa ventilátor zapína približne pri 500 W, pred touto hranicou sa netočí, čo spôsobuje isté zahrievanie komponentov vo vnútri. Aj keď sú kondenzátory japonské, môže to do určitej miery ovplyvniť životnosť. Bolo by dobré, keby sa minimálne otáčky zapínali skôr. Nie je to však problém, ak nastavíte minimálne otáčky regulátorom.
Vysoká kvalita
Regulácia otáčok, ZeroRPM
Dlhé, kvalitné káble
Veľký prah zapnutia režimu ZeroRPM
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František, Praha 4
Rated 03/03/2026, variant Corsair RM850x ATX 3.1
Verified purchase
The power supply powers as it should, nice cables, reliable.
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Jan, Kralupy nad Vltavou
Rated 02/01/2026, variant Corsair RM850x ATX 3.1
Verified purchase
Beautiful, clean design.
The cables are separate, i.e. only the necessary ones can be used. The others don't get in the way of the closet.
The cables and their slots in the power supply are clearly described.
Eventually quiet, but it took a bit of work, see negatives.
Lots of cables: motherboard, 8-pin for CPU, 3 PCIe, 2 SATA (each with 2 connectors so it feeds 4 drives), PCIe 12+4 for the latest graphics cards, even 1 cable with three PATA (IDE) connectors.
It has a rotary knob on the back that somehow increases the speed. It's not clear exactly how it works, or what it's even for when the speed is controlled on the board for different temperatures. The button is also inaccessible (it is on the back of the cabinet). It's not even obvious which position is off, although in one direction it shuts off through a bit of resistance like an old radio, so probably that one.