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

(1010 Reviews)

Price
$121.79

Quantity
(10000 available )

Total Price
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1580 Ratings
1159
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Reviews
  • Ha ngoc ho

    > 3 day

    Awesome. Highly recommended.

  • Rhianna

    > 3 day

    The first one I ordered arrived in the Corsair box, everything looked like it was in great condition and it was really easy to install. I got it all hooked up and when I pressed the power button, the power supply made a popping sound and the entire room filled with a burnt plastic smell. Obviously the computer didn’t turn on lol.

  • Cavan Lee Sears

    > 3 day

    The product is fine, but do not purchase from this item from GREZ LLC, they will charge you more than double the average price and their returns service is the worst Ive ever experienced.

  • Shawn King

    > 3 day

    The quality of this power supply speaks for itself, great product, a must have!!!

  • Judson Taylor

    > 3 day

    Received a faulty unit. Going with a different brand once return process is finished.

  • Cooper

    09-06-2025

    If something arrives Dead, it can easily be replaced through Amazon thanks to not only the return window, but also their 90-day warranty under tech support. So far, mine hasnt died yet, and it was so nice to be able to cut down on the amount of cables my old setup had. This PSU runs silently and its nice to have the room for upgrades in the future. My only concern is that the plug-in cable ( the cable where you plug the battery into the wall), doesnt stick all the way into the PSU socket. Still runs great though.

  • Otavio P.

    > 3 day

    As described, fits the purpose with accessible price. I recommend

  • Jonathan Martin

    > 3 day

    Performs fantastically, cant hear it at all. Using it to run an i7 5820K OCd to 4.1GHz with 2x EVGA GTX 580s on an ASUS X99 Sabertooth and it gives me no issues whatsoever. And its Corsair so its got a practically never-ending warranty. Been running it for over a year and its not stumbled once. Highly recommended.

  • BC

    > 3 day

    Premium build quality and a breeze to install.

  • Dr. Kole Robel MD

    > 3 day

    corsair makes junk, ordered this PSU and it lasted roughly 18 months, tried to file a warranty claim and got the run around. corsair is the first power-supply ive ever had fail in the 8+ years ive been building computers. def not worth the money, i would recommend another brand if youre building a high end gaming PC.

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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