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  • Front. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 11. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
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  • Alt View 15. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
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  • Alt View 17. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 18. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 19. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 20. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 21. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 22. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 23. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 24. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 25. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
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  • Alt View 27. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 28. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 29. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Step-by-Step Instructions to Build a PC video 6 minutes 35 seconds
  • CORSAIR How to Build a PC - How To Video video 1 minutes 34 seconds

CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black

Model:
CP-9020200-NA
SKU:
6459244
Highly rated by customers for:
Your price for this item is $149.99

Customer reviews

Rating 4.8 out of 5 stars with 1786 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.7 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

96%would recommend to a friend

Customers are saying

Customers frequently mention the RMx Series RM850x's excellent performance and quiet operation as major strengths. Its fully modular design and ease of installation are also frequently praised, simplifying cable management and the overall building process. While some users noted its larger size, the positive feedback overwhelmingly focuses on its reliability and value. The power supply is considered a great option for its price point.

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 89 Showing 1,761-1,780 of 1,786 reviews
  • Pros mentioned:
    Noise level

    Great Purchase

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

    feels solid, extremely quiet and does the job well. great!

    I would recommend this to a friend

  • CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Mod

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

    Perfect upgrade and replacement for old hard wired power supply. Easy installation.

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

    it works

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

    it works like a power supply. it does indeed work.

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

    RM850X

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

    Great product and working great!! It was jsut the right power source for me.

    I would recommend this to a friend

  • perfect

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

    perfect for the last 3 years been and decently light for the wattage

    I would recommend this to a friend

  • This was an emegency replacement

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

    My computer was making a burning smell and it turned out it was the power supply. Bought this as a replacement. It came in a few days, is quieter than the original, and overall the computer feels cooler.

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

    Excellent PSU

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

    excellent Power supply bought one for each of my computers.

    I would recommend this to a friend

  • Solid 850W PSU

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

    After buying a thermaltake that was dead out of the box I switched to this Corsair and am happy with the choice. Solid PSU and quiet operation - I would buy again.

    I would recommend this to a friend

  • Great purchase

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

    I needed a new power supply that would be able to handle the output required to keep up with my GPU when playing games. Hasn't failed me so far unlike my old one and I absolutely love it.

    I would recommend this to a friend

  • Solid ATX Power Supply

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

    This ATX Power Supply was procured to replace the old one in my desktop that failed to start the motherboard boot process. This RM850x is solidly built ATX Power Supply with modular cabling. This allows me to arrange the cabling neatly inside the computer box.

    I would recommend this to a friend

  • Great PSU for the value!

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

    Great psu! Would buy again if I ever needed too. Corsair power supplies are generally well built and usually my to go to when I need quality.

    I would recommend this to a friend

  • Works great!

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

    Replaced a Rosewill power supply that was having intermittent power issues. Now my system is back up and running full force

    I would recommend this to a friend

  • Quiet high quality psu

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

    Easy to install and exceptionally quiet well worth the price.

    I would recommend this to a friend

  • Just get it

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

    Excellent mid-range power supply. Plenty of connectors for a variety of applications. Worked out of the box, no issues.

    I would recommend this to a friend

  • Computer

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

    Very satisfied with the product and would order again from BestBuy

    I would recommend this to a friend

  • Solid Product

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

    Works perfectly. Great design and cables seemed to be a great length for my Hyte Y60 case build.

    I would recommend this to a friend

  • Solid choice

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

    Solid choice for a PSU, works well with no issues since I bought it and installed.

    I would recommend this to a friend

  • Perfect fit

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

    Just what I was looking for . Fits My machine like a glove !

    I would recommend this to a friend

  • Works as advertised

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

    Bought for my new high end system, works great!!!!

    I would recommend this to a friend

  • PowerSupply

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

    My second time buying this item and all I gotta say is it’s perfect.

    I would recommend this to a friend
Page 89, Showing 1,761-1,780 of 1,786 reviews
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