Save up to 50% on 3-Day Sale deals.Ends 12/14.Shop now

Skip to content
Gift Ideas
Main Content

Customer Ratings & Reviews

Your price for this item is $149.99

Customer reviews

Rating 4.8 out of 5 stars with 1779 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 9 Showing 161-180 of 1,779 reviews
  • Pros mentioned:
    Ease of use, Modular

    Rated 5 out of 5 stars

    Excellent

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

    Easy to use and install. For most pc builds, this power supply is more than capable to run your computer. And with this being fully modular, no need to getting extra cables, it comes with all that you need!

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

    3 years+ no issues

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

    I use this to run my EVGA 3070Ti and 12700, absolutely love the cables, it’s like a cheat code for wire management!

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

    Rated 5 out of 5 stars

    Love it

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

    This power supply produces plenty of power for my computer that requires power, the cables that connect to motherboard and such are easy to plug in and come with labels.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Modular

    Rated 5 out of 5 stars

    Great value PSU

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

    Great value. Fully modular PSU with a good power rating, easy to install and work with in general. Highly recommend

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

    Rated 5 out of 5 stars

    I am confident this will be with me for a long tim

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

    With a 10-year warranty. Very silent and name brand. I am very confident this power supply will stay with me throughout many of my upgrades and rebuilds. Worth investing in a good power supply.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Made my management way better

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

    Bought after a thermaltake died. Was much easier to fit in my new 5000d airflow case. Wires were way more flexible than thermaltake and it made cable management easy. Very happy and fired up quick. 0 issues

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

    Rated 5 out of 5 stars

    Solid PSU

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

    Well built, quiet, and just has enough cables for everything. I trust Corsair with their PSUs as I had used their CX650m for 3 years.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Noise level

    Rated 5 out of 5 stars

    Corsair 850

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

    Great PSU no issues with it what so ever, easy setup . Powering my computer fine and isn’t too Loud great PSU

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Good Quality

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

    This is the second computer I've built with this model power supply, the first one has been working hard for about a year. Love the modular for the cable management, and the quality, it has not failed me yet.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Good PSU.

    |
    |
    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Excellent PSU. High quality and very easy to install. Good cables, quiet. No issues powering my i7 and RTX 3080.

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

    RMx Series PSU

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

    Awesome PSU for the money, the fan is pretty quiet too. The cables are also pretty flexible, so they are easy to work with. I recommend.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Power supply

    Rated 5 out of 5 stars

    Better than the bad reviews.

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

    A lot of power for my system, more than I needed but I did for future upgrades. It was easy to install and is very quiet! I know people complained about the fan being loud and the wires too short and stiff, I didn’t get this issue. I would recommend!

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Great product

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

    Great performance, high quality build. The cables are really great, im going to continue to use corsair products.

    I would recommend this to a friend
  • Pros mentioned:
    Modular

    Rated 4 out of 5 stars

    Good quality power supply

    |
    |
    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I bought this because it's a good quality power supply. It comes with plenty of modular cables. It does have a unique power cable orientation though, so be careful if you have a unique case.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Solid performance, runs quiet

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

    Works great, best psu I’ve bought. Cables came bundled making it easy to route.

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

    Rated 5 out of 5 stars

    Solid power supply

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

    No complaints yet powers a tuf 4070 ti and a 12700k like no problem, nice and quiet too

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

    Rated 5 out of 5 stars

    Great Product

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

    gets the job done for a reasonable price. Great option for a 850w psu. Had no issues with it and it looks great

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Works great

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

    My computer was having issues where everytime i would load into a graphic intense game it was black screen but the computer would still be on. I was so worried it was gojng to be a more expensive part to fix and it eneded up just being the power supply (thank goodness). This power supply is also a lot quiter than the one that came with my prebuilt and my computer has never worked smoother since installing it. Also pretty easy to install. It was my first time swapping that unit so it took about an hour or two just to figure it out. Its so worh it!

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

    Rated 5 out of 5 stars

    More Than Enough Power

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

    For high-end custom builds, it handles the power demand incredibly well . With detachable cables that minimize clutter of wires, the versatility of installation increases

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Corsair Never Compare.

    |
    |
    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I am love my PCU. Handles my ryzen series 9 7900x and RTX 7900xtx. Plus much more without a problem. I will never go with another product no matter the price difference. Corsair never compare.

    I would recommend this to a friend