Skip to contentGo to Product Search
Main Content

Customer Ratings & Reviews

No content
  • 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
$149.99
Save $20
Comp. Value: $169.99

Customer reviews

Rating 4.8 out of 5 stars with 319 reviews

Rating Filter

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

Pros mentioned filter

Cons mentioned filter

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 6 Showing 101-120 of 319 reviews
  • Pros mentioned:
    Power supply capacity

    Powerhouse

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

    This PSU has no power issues at all. I run battlefield 6 with discord and other apps running and it doesn't break a sweat. And for the price its the perfect choice. Would buy again

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

    Great PSU

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

    Was nit as complicated as it looked to get set up and it is quiet and amazing.

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

    Quality power supply.

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

    Great power supply. More than enough power for my custom build. Corsair makes quality products. Performs great.

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

    Power supply unit

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

    Most needed upgrade. I can now run up my electric bill.

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

    Solid!

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

    Works great with my build! the grills look cool. Its a power supply, its supposed to be boring. I do think that it was pricey, but thats on bestbuy.

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

    Beast!

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

    What a beast of a PSU! I loved this thing and it is more than enough for my build. It is also really easy to install!

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

    solid power supply

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

    solid power supply reliable as you can get and comes with good quality cables.

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

    Power supply

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

    No issues, handels all my equipment as needed, and doesnt set my breaker off in my old house

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

    Very Reliable

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

    Straightfoward, reliable, does the job well and without complications.

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

    Great psu

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

    Great psu i have owned. Im sure there are other with higher output than it. But for my needs it is just great. No issues what so ever. Very quiet and enough for what i am currently running on my pc. If i ever need a new one would definitely use that same type/model perhaps on with more wattage but don't think i will unless i do a completely newer upgrade of my pc. So overall very happy with this psu

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

    Great option for the price

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

    Great choice for my pc upgrade. I really love the cabling

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

    Great

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

    Works great needed to replace my old one it was easy to install

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

    Love Corsair

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

    Now issues really easy to use. Current set up with a 5070ti and ryzen 7 9800x3D

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

    Power supply

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

    The power supply was awesome nothing looked cheap on it easy to do cable Managment

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

    Nice Power Supply. Great Value.

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

    Nice power supply! Easily installed in a Fractal North Mid-Tower case, running an. Loads of long connector cables to reach the motherboard and other devices. Easily powers a Gigabyte X870E AORUS Elite Motherboard with a Ryzen 9 7900X CPU and an Overclocked ASUS Prime GeForce RTX 5070 Ti. Very quiet. Highly recommended.

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

    As advertised

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

    No complaints. It works well, and its quiet. Overall very satisfied

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

    Really good PSU

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

    Installation was easy of course, 0 rpm mode makes pc so quiet and it never gets to high temperatures

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

    Above expectations

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

    Functioning perfectly, and quiet. First time using a component based PSU and love the flexibility and cable reduction in my case. Would definitely buy again.

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

    Great PSU

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

    Fan speed adjustment at the back is great! powered my 9800x3d with 5070 ti very well

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

    Awesome PSU

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

    Great product! awsome if you on a budget and works great

    I would recommend this to a friend
Page 6, Showing 101-120 of 319 reviews
Sponsored

People also viewed

  • CORSAIR - RMX Series RM1000x Cybenetics Gold Fully Modular ATX Power Supply - Black
    $209.99
  • MSI - MAG A850GL PCIE5 850W ATX 3.1 &PCIe 5.1 Ready Full Modular 80 Plus Gold Gaming Power Supply - Black
    $119.99
    $129.99
  • Thermaltake - Toughpower GF A3 850W 80 PLUS Gold PCIe Gen 5 ATX 3.0 Ready Fully Modular Power Supply - Black
    $119.99
    $129.99
  • MSI - MAG A1000GL PCIE5 - Full Modular - 80 Plus Gold 1000W - ATX 3.1 Gaming Power Supply - Black
    $134.99
  • CORSAIR - RMe Series RM850e 80 PLUS Gold Fully Modular Low-Noise ATX 3.1 and PCIE 5.1 Power Supply - White
    $154.99