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
  • Ivan Lam

    > 3 day

    Everything is good

  • R Martin

    > 3 day

    good

  • Juan Luis Rodriguez

    > 3 day

    Yeah, I got this Power Supply for my PC. I spent over 4-5 hours installing it and organizing the cable management in the back. After all that time, I was proud of my work. I put everything back together turned on my PC and......NOTHING. My PC wasnt powering on unfortunately. I was so confused. I re-opened the back panel to check the cables and everything, I was sure I connected everything the way it was suppose to be. I double checked if everything was plugged in correctly. Tried turning on PC again and still Nothing. I was so pissed off. I tried changing the cables multiple times and no luck. after another 2-3 hours trying to figure out why the PSU isnt powering my PC. I came to an agreement that my PSU by COSAIR was faulty and arrived broken. $160 wasted. I used a 1000w EVGA PSU and it worked like a charm.

  • Oscar Phan

    > 3 day

    Great product good quality and great entry option for ppl who like custom cables.

  • Doug Church

    > 3 day

    Easy install.

  • Polari

    > 3 day

    One of my replace component for my pc, alone with other pieces. RMX is definitely better , no matter power or noise, definitely RMX , Im using 3080ti now but will switch to RMX 1000or 1200 next year for 40 series.

  • joe

    > 3 day

    I am very pleased with my purchase and have to say this is a GREAT Power Supply. Robust and easily ran my RTX 2080 ti and Elgato 4k pro setup after off-brand 735w failed multiple times.

  • Mike

    > 3 day

    This thing comes with everything you need to build a PC. All cables are very well built and sturdy, and I didnt have any issues with length. The PSU is super quiet, and even runs without a fan under light load. Installed quickly and easily in the Lian Li Lancool II mesh.

  • david

    > 3 day

    Very good product, I never had corsair once fail on me. Definitely recommend.

  • Addie

    12-06-2025

    so silent the best performance worth it to buy... corsair always reliable.. hope they sent more because of loyal buyers of there corsiar products i think 75% of my PC built is powered by corsair

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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