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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
Highly rated by customers for:
$135.99
Save $34
Comp. Value: $169.99

Customer reviews

Rating 4.8 out of 5 stars with 318 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 4.8 out of 5 stars

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95%would recommend to a friend

Customers are saying

Customers enjoy the RMx Series RM850x power supply for its overall performance and quiet operation, with many appreciating the zero fan mode. The fully modular cables also make cable management easier, and the installation process is straightforward. With its adjustable fan and good modularity, this power supply is a popular choice for those needing ample power.

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 9 Showing 161-180 of 318 reviews
  • Pros mentioned:
    Cable management

    Great PSU...

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

    Been using this PSU for about 4 months now, and I haven't had any issues. The 12x4 power cable for the GPU has also been great, and it was actually the main selling point for this particular PSU, so from my experience thus far, I wouldn't hesitate recommending it to others.

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

    Corsair RMx Series RM850x...Works Well

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

    i purchased this power supply for a brand new pc build with a new Ryzen 9900x cpu and MSI Mag 870e MB. This 850 watt power supply has lived up to my expectations and has blended in nicely with my new setup.

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

    Very well built and low sound level

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

    Very well built and very low sound level. Many parts included to make sure connecting is not a issue

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

    Great low/mid budget option!

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

    Purchased this power supply for my first build back in 2021 and it's still running just as good as it did the day I bought it! 10/10 would recommend and will continue to purchase Corsair PSUs.

    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:
    Power supply capacity

    CORSAIR - RM850x Fully Modular ATX 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.

    First class power supply that meets all my needs with room for expansion.

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

    Excellent PSU - You will regret buying a cheap one

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

    High quality with no issues. Getting modular is so much better and the cables provided are of extreme quality, like the PSU itself. Would definitely buy again!

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

    Value for money PSU

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

    I am using the RM850x PSU in my new build with 9900x and 5080 FE. It includes the 12VHPWR connector required for 5080FE. The PSU is almost silent even during heavy gaming.

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

    Easy and works.

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

    Easy to install and no problems, love the modular design.

    I would recommend this to a friend

  • Great PSU

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

    Corsair has never let me down. My last 650W that I bought in 2016 is still going in my previous build, but it was time for a new build. The new 12+4-pin connector for modern GPUs is very convenient and helps keep cable management clean.

    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:
    Power supply capacity

    Very quiet and powerful

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

    Recently upgraded to a 4080 super and this thing powers it just fine

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

    Piece of the puzzle

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

    As Advertised pleased with this product part of the puzzle for my grandsons project

    I would recommend this to a friend

  • Perfect for my needs

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

    Does everything I need it to do with no issues. It's a great power supply!

    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:
    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:
    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:
    Installation ease

    Easy Installation with only replacing the PSU

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

    fast and easy to install while replacing 5-6 year old psu

    I would recommend this to a friend

  • Simple and convenient

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

    After the replacement, it has been very stable, and the replacement process was simple and convenient.

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

    Power supply replacement

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

    Perfect, it did the job I intended it for! Fixed my problems with crashing because my other one went out

    I would recommend this to a friend
Page 9, Showing 161-180 of 318 reviews
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