Year-End SaleEnds 1/1/26. Limited quantities. No rainchecks.

Skip to content
Main Content

Customer Ratings & Reviews

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 81 Showing 1,601-1,620 of 1,786 reviews
  • Rated 5 out of 5 stars

    Excellent quality

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

    Highly recommended, excellent quality and easy to use.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Good quality

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

    It has a high quality. After some outrage, it still works fine.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Power

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

    Very good power supply I would definitely recommend

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Corsair

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

    Great PSU regulates power perfectly without any issue

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Goid

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

    Good. Its a power supply. Not much to say but it works

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    RMx 850!

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

    Solid power supply with decent cables, not much else to say other than it has a decent warranty so nothing to really worry about.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Great product

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

    Great product. Been using my pc for 3 years now and haven’t had any issues.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Recommend

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

    Worked exactly as it was supposed to- pleased with purchase

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Power supply

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

    Corsair is a great power supply, i would buy it again

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Normal 850 Watt PSU

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

    Wish it came with 3 GPU 8 pins instead of 3 for the CPU. Works fine so far with a 3080 Strix

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great

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

    Works amazing. Great customization of the power cords

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Power

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

    Excellent Corsair is always top of the line product

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    returned bc accident

    |
    |
    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    ended up returning cause it was an accidental purchase

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Pushing them electrons

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

    Raised my 3d Mark score a few points, is super quiet

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Good for the cost.

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

    Good power supply. Cables are a tad on the stiff side. Great supply if you end up with a 4080.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Review

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

    Works great, looks nice. Would recommend to others.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    KhoaD

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

    Quite, i keep it running 24/7. come with 3 pcie wire

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    Great PSU Not So Great Customer Service

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

    Installed this because my 6 month old prebuilt's PSU, I bought from best buy, burnt out. Only reason I didn't take it in for geek squad to fix it under warranty is because they are the rudest most ignorant people I ever met. I walked out twice on them because I didn't want to snap out on them. Rude people man! I'm glad I know how to build a PC.

    I would recommend this to a friend
    • Brand response from Corsair
      Posted .

      Hi,

      Sorry to hear about your experience. If you have any questions or concerns regarding the PSU itself, please feel free to reach out - we'd be happy to assist: help.corsair.com

      -Albert CorsairGaming

  • Pros mentioned:
    Modular

    Rated 5 out of 5 stars

    Great PSU

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

    Upgraded my 650W to this one and couldnt be happier. It is modular but just make sure your case has enough room for the cables as some are clunky.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    good service support

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

    still prefer EVGA but CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply work fine,will see for how long,good support

    I would recommend this to a friend