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  • Corsair RM850x is a black and silver computer power supply unit. It is designed to provide power to a motherboard and its components, including SATA/PATA drives and PCIe slots. The unit has a 12V output and is capable of delivering up to 850 watts of power. The Corsair RM850x is a reliable and high-quality power supply for a wide range of computer systems.
  • Corsair RMx Series Power Supplies: Our Best-Selling Power Supplies, Updated. Fully Modular, Low Noise, and Cybenetics Gold-Certified for Reliable Power.
  • ATX 3.1 Certified: ATX 3.1 and PCle 5.1 compliant, ideal for delivering dependable power to current and future top-performing PCs. 100% Japanese 105C Electrolytic Capacitors. ATX 3.1 PCle 5.1 with 12V-2x6.
  • Fully Modular Connectors: SATA/PATA SATA PATA OSI338v0 Connect only what you need using sleek embossed cables with low-profile combs to make installations a breeze. 1x CPU/PCIe / CPU PCIe 12V-2x6 Native 12V-2x6 GPU cable included for use with modern graphics cards such as the NVIDIA GeForce RTX 40 Series.
  • The image features a 140mm low-noise fan with a fluid dynamic bearing and magnetic dome structure that keeps noise to a minimum. The fan also has a Zero RPM mode, which eliminates fan noise completely at low to medium loads.
  • Get more air through the PSU or override the Zero RPM Mode and low-noise profile of the RMx series with our manual fan override knob, increasing fan speed and airflow.
  • FULLY MODULAR CABLING Connect only the cables you need. 1x ATX (24-pin) 2x ATX 12V (4+4-pin) 3x PCIe (6+2-pin) 1x 12V-2x6 (12+4-pin) 2x 4 SATA (Straight) 1x 3 PATA (4-pin)
  • WORLD-CLASS 24/7 CUSTOMER SUPPORT O COUNTRY LOCAL CORSAIR 10 GUARANTED REGULATIONS YEARS ARE APPLICABLE WORLD-CLASS SUPPORT Our award-winning service means you can enjoy your gear worry-free.
  • CORSAIR X RM850x
  • CORSAIR RM850x
  • The text on the image reads "Corsair RM850x / CPU PCle a CUNDIGAT - NIONTO HYSOO SATA/PATA / SATA, AIL PATA nv ONLY MOTHERBOARD 12V-2x6."
  • Alt View 21. CORSAIR - RMx Series RM850x Cybenetics Gold Fully Modular ATX Power Supply - Black.
  • Alt View 22. CORSAIR - RMx Series RM850x Cybenetics Gold Fully Modular ATX Power Supply - Black.
  • Alt View 23. CORSAIR - RMx Series RM850x Cybenetics Gold Fully Modular ATX Power Supply - Black.
  • The text on the image reads: "MOTHERBOARD 12V-2x6 CPU PU/ PCle / SATA/PATA / PATA DESIGNED FOR USE WITH GENUINE CORSAIR TYPE 4 CABLE SETS ONLY."
  • Corsair RM850x
  • The image shows a variety of Corsair products, including a box and several cords. There are a total of 12 cords, with some of them being black and white. The cords are arranged in a row, and they are all connected to a single box. The box is placed in the middle of the scene, surrounded by the cords. The arrangement suggests that these cords are part of a larger electronic system or setup.

CORSAIR - RMx Series RM850x Cybenetics Gold Fully Modular ATX Power Supply - Black

Model:
CP-9020270-NA
SKU:
6587623
Your price for this item is $134.99
The comparable value price is $169.99

Customer reviews

Rating 4.8 out of 5 stars with 254 reviews

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Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.8 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

95%would recommend to a friend

Customers are saying

Customers commend the RMx Series RM850x Cybenetics Gold Fully Modular ATX Power Supply for its excellent overall performance, making computers run perfectly. The power supply also stands out due to its fully modular cables that simplify cable management and its impressively quiet operation, featuring a desirable zero fan mode. Furthermore, users appreciate the ease of installation and the substantial power capacity it provides.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 7 Showing 121-140 of 254 reviews
  • Pros mentioned:
    Power supply capacity

    power

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    great supply to power my gaming pc that i upgraded

    I would recommend this to a friend

  • Great love it!

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love it!! It even has a little fan nob for when my CPU decides it doesn’t like the Backrooms games lol

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Amazing PSU

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I like the cables and how simple it was to set this PSU up. 2 months later and it's still doing it's job. Cables are decent length and flexible.

    I would recommend this to a friend
  • Pros mentioned:
    Power supply capacity

    This power supply is amazing

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this to power up my gpu and than am building a pc with it works with it

    I would recommend this to a friend

  • It Supplies Power

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It's a Power supply, Bought it in a pinch, Thought mine had died but after i found out that mine was fine, i chose to keep it, even in a gaming load the fan will not spin. Feels very nice to install and is very competitively priced @ $145 (after tax)

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    You Can't Go Wrong with RMx

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Truly fantastic. This is the 2024 refresh (if memory serves), with the 12V-2x6 native for the newest generation of GPUs. You really can't go wrong with the Corsair RMx series. Completely recommend.

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Best PSU on the market hands down!

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This PSU made is easier for me with the wiring, especially with its dedicated 16vhpwr cable and port. This made sure I used less wires and kept cable management tidy.

    I would recommend this to a friend
  • Pros mentioned:
    Noise level

    Quiet and easy

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very easy to install and seems quiet. The amount of cables included is nice but there are a couple different cables that I don't believe was included

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Excellent modular power supply

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is really a great PSU and was a replacement for the exact same model in my current system. I was very glad that bestbuy had a unit given that my computer is 6 years old. Good job keep it up!

    I would recommend this to a friend
  • Pros mentioned:
    Installation ease

    Great PSU for My Upgrade!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Top brand at a great price! Allowed me to power my new-gen AMD upgrade. Easy to install and connect with all the modular options.

    I would recommend this to a friend

  • Good Power Supply

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It’s a solid power supply for a decent price. I bought it because I needed the new connectors for the 50 series.

    I would recommend this to a friend
  • Pros mentioned:
    Power supply capacity

    Great product for the price.

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product fixed all my power issues. Was having video card issues due to being under powwered.

    I would recommend this to a friend

  • Good PSU

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Has been solid so far. Fan control is great and it does what it’s supposed to do.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Safe reliable and cute psu

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Solid and reliable. Safe, my prebuilt cheaped out on my psu so I didn’t want some random psu this is powering my rig with a 5070 ti perfectly

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Good replacement

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Had my old psu take a nose dive. This one has been working great

    I would recommend this to a friend

  • its good

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Solid PSU. All the cables you need and more. The connectors can be a little snug when plugging in but its fine. Cool that it has a fan with a knob for speed

    I would recommend this to a friend
  • Pros mentioned:
    Noise level

    Corsair RM850x

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works as expected and the maglev fan is relative quiet. The design of the fan cover also helps reduce cage rattle.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Power supply

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It's a power supply, worked as expected. Nothing special.

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Excellent Upgrade

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Replaced my 2021 model. Better/thinner cables, daisy chain has 4 slots compared to 3 from my old psu. Another great product from Corsair!

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Soups good

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Cables feels good and are long enough for what is needed. Enough cables for a standard desktop. 10/10 good soup

    I would recommend this to a friend
Page 7, Showing 121-140 of 254 reviews
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