Corsair RMX Series, RM850x, 850 Watt, 80+ Gold Certified, Fully Modular Power Supply (Low Noise, Zero RPM Fan Mode, 105°C Capacitors, Fully Modular Cables, Compact Size) Black

(433 Reviews)

Price
$121.79

Quantity
(10000 available )

Total Price
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1580 Ratings
1159
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Reviews
  • A Person

    > 3 day

    I bought this to hopefully stop some system crashes I was experiencing that may have been tied to hardware issues. It actually seemingly did help, although not for very long. But you know what? Im glad I ended up replacing the old one. I think this PSU is great. Although I wish the installation instructions were a little more clear. This was the first time I had to do something like this, so I had to look up a video guide because the included booklet wasnt of much help to me personally, so what shouldve taken a few minutes at most ended up taking over an hour. But regardless, I dont regret my purchase of this PSU.

  • Dewey Estep

    > 3 day

    Lasted less than a year, then died.

  • ALEX

    > 3 day

    Excelente producto, cero ruido!, los cables son algo rígidos en sus extremos pero nada que no pueda acomodarse con cuidado en un case.

  • GODZILLASAURUSREX

    Greater than one week

    Have used Corsair products for a long time. They have a great reputation and customer service. This PSU was a breeze to install thanks to its modular cables. Plus, it has a ten year warranty.

  • Pete Smith

    Greater than one week

    Well,

  • Ernst

    > 3 day

    I will NEVER buy anything but modular now.

  • rand

    09-06-2025

    Ask questions before buy ing, their ans wers makes me feel professional. After testing, It working properly.

  • Cesar

    > 3 day

    An improvement to the old design - smaller size 150mm and have 10 yrs warranty. Flat cables is a must for good cable routing. Time will tell if its durable and reliable than my 5yr old seasonic x series.

  • Farrell

    > 3 day

    I think this is the highest Ill go when it comes to Watts. Its beautiful and can fit a lot of cords. Both peripherals and PCI Express. Of course the usual Hard Drives and others too but man, it has lots of input. It runs very quiet but then again, my previous Power Supply was also quiet so Im use to it.

  • Aritra M.

    > 3 day

    EDIT: I got a new replacement order delivered and it had proper packaging. The unit is great, and works as you would expect. Its a bit overkill for my system, but it makes sure that it is within the highest efficiency curve. The modularity is great, and it hardly needs to spin the fan on idle load. Build quality is also great. But keep in mind that this power supply is longer than your 750 ones. So keep your case dimensions in mind when ordering this. Using this PSU in Corsair Spec-06 with a mechanical hard drive cage is a pain, but possible.Overall a great product.

Corsair RM850x series power supplies are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. Using only Japanese 105 Degree C capacitors, users can depend on an RM850x PSUs" long life and reliability, backed by a ten year warranty. Zero RPM Mode means an RM850x series PSU is virtually silent at low and medium loads, and even at maximum power, a low noise fan ensures quiet operation. Fully modular cables make PC builds and upgrades easy, as you only need to install the cables your system requires. Quiet, efficient and dependable, an RM850x PSU has everything you need to power your high performance PC for years to come.

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