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Customer Ratings & Reviews

Your price for this item is $72.49
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The comparable value price is $144.99

Customer reviews

Rating 4.8 out of 5 stars with 1846 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 4.7 out of 5 stars

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96%would recommend to a friend

Customers are saying

Customers are pleased with the RMx Series 850W power supply's ample power, modular design, and quiet operation. Many appreciate the high-quality components and easy installation. While some users reported an audible coil whine, the majority found the unit to run cool and efficiently. The positive feedback on quality and ease of use outweighs the relatively few negative comments.

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 35 Showing 681-700 of 1,846 reviews
  • Pros mentioned:
    Power

    Rated 5 out of 5 stars

    Great Power Supply

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

    Terrific modular power supply with plenty of flexibility and plenty of power for powerful gaming systems.

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

    Rated 5 out of 5 stars

    Great power supply

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

    Nice power supply. Comes with all the needed cables for my new build with AMD cpu, GPU, and new Aorus motherboard.

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

    Rated 5 out of 5 stars

    c

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

    eight hundred and fifty watts of gpu roasting bliss. put away the heater this winter because this baby will keep you warm.

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

    Rated 5 out of 5 stars

    Excellent psu

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

    I always trust corsair for the best and most reliable psu's. This one is no exception and has completed my ryzen build with a 1080 ti. Highly recommended!

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

    Rated 5 out of 5 stars

    Great Product

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

    I have had excellent results with this product . I have used this in a prior PC and had excellent results .

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

    Rated 5 out of 5 stars

    Good PSU

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

    Fully modular and 100% what i expected so far! Will update if anything takes a turn for the worse. Would buy again.

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

    Rated 5 out of 5 stars

    Great PSU

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

    Great power supply. Quiet operation, well built, and plenty of power. Plenty of cables and decent quality for psu supplied.

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

    It’s a power supply so do not cheap out.

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

    Do not cheap out on your power supply. Quiet and does the job, only complaint is the cables could be a little better.

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

    Rated 5 out of 5 stars

    Perfect

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

    Power supply works great. Has every connection you would need and looks good. Enough power for my 5900x and RTX 3070.

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

    Rated 5 out of 5 stars

    Still workin fine after 2 years of heavy use

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    Posted . Owned for more than 2 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    2 years, computer is on at least 8 hours a day, still going strong, the detachable / interchangeable cables are great!!

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

    Rated 5 out of 5 stars

    do it

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

    After receiving/returning a whiny seasonic I decided to buy this one instead and it has since been flawless

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

    Rated 5 out of 5 stars

    Powerful unit

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

    Awesome power supply. 850 is plenty. Works well and silent. Enough power for 3080 vid card. Buy one and don't look back.

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

    Rated 5 out of 5 stars

    good psu for the money

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    Posted . Owned for more than 2 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    good psu with pleanty of power for my system. very stable performance

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

    Rated 5 out of 5 stars

    Useful

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

    A but more than other Psus but worth it. The ability of not having to worry if my psu can power this new part is worth it.

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

    Rated 5 out of 5 stars

    Corsair works

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

    So much power to handle all your needs. Can’t go wrong with Corsair and this PSU doesn’t disappoint.

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

    Rated 5 out of 5 stars

    excellent power supply!

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

    corsair power supply provides all the power needed for my new custom built computer. works as expected and excellent!

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

    Rated 5 out of 5 stars

    Solid PSU from Corsair

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

    Great PSU with the flexibilty of it being fully modular and gold rated. Perfect at handling my 3090FE and 3950X.

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

    Rated 5 out of 5 stars

    Great PSU

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

    Handles my pc power and exceeds it! I was initially going for the 750w but waited till the 850 was in stock. Great decision

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

    Rated 5 out of 5 stars

    Corsair is good stuff.

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

    I use corsair and one other company to do all my builds. I have a few that are over 7 yrs old and work great, never had a problem.

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

    A Great Choice For Any Build

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

    After being utterly disappointed by the failure of CX750, I decided to upgrade to this PSU and see if it would be any better. Thankfully the RM850X delivers ,as I haven’t had a single complaint about this power supply so far. It’s super quiet, fully modular, and can keep the power running on a pretty beefy computer without any problems. It also comes with a nice bag to keep all your extra cables in which is a nice plus as well as a nice little sticker. Anyway, I would say that this PSU is worth every penny.

    I would recommend this to a friend