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Customer Ratings & Reviews

Your price for this item is $149.99

Customer reviews

Rating 4.8 out of 5 stars with 1782 reviews

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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 17 Showing 321-340 of 1,782 reviews
  • Pros mentioned:
    Noise level, Performance

    Rated 5 out of 5 stars

    Great psu for a gaming PC

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

    Have had this ps for a couple months now, high quality, quiet fan, trouble free performance.

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

    Rated 5 out of 5 stars

    Nice PSU

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

    Great modular power supply. Way quieter than my old one.

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

    Rated 5 out of 5 stars

    Very good 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.

    Very reliable and quite power supply. Modular and the cables will fit the modern motherboards

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

    Rated 5 out of 5 stars

    Just what I needed

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

    Needed to upgrade MB, CPU and ram to be able to run windows 11 as Intel 7700K would not. New system needed a little more power as 650 watt would not run system with dedicated video card so this 850 watt is just what I needed.

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

    Rated 5 out of 5 stars

    Good power supply

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

    Good power supply! If you are running anything under a 4090 this is more than enough power even for future proofing as cards are getting more efficient over generations

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

    Rated 5 out of 5 stars

    Good psu

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

    Very good had it for about a year still works good

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

    Rated 5 out of 5 stars

    Amazing

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

    Overall great product. The fully modular aspect makes it amazing for keep cords tidy as I only need to use what I need to power so there are less cords to mess with.

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

    Rated 5 out of 5 stars

    Perfect Range for High End Gaming

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This power supply is very solid, and can handle anything within the wattage range! It is paired with my Corsair 4000x case and looks super sleek. I would recommend fully modular if you're a cable freak like me you're going to want this option so trust me.

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

    Rated 5 out of 5 stars

    Life saver, recommended PSU if you are in STX area

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

    Saved my PC build honestly, easy to install just connect the right cables to the proper hardware then viola functioning PC. Truly recommend getting your PSU locally because whichever they are selling in your stores will work in your house.

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

    Rated 5 out of 5 stars

    I have the power

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

    Been using Corsair for a while. Amazing performance for my system. A lot of cables to even host a double graphic card. Up to 16 fan support if needed! Also helps that everything is labeled on the brick.

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

    Rated 4 out of 5 stars

    850x

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

    Seems to be a good psu but i haven't tested it besides powering my system. I can say that its quiet when the fan is spinning and has zero rpm mode..

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

    Rated 5 out of 5 stars

    Great power supply

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

    What can I say, solid power supply for your pc. One of the best ones out there

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

    Rated 5 out of 5 stars

    Excellent value

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

    Handles my system workload without breaking a problem! Came with everything needed for a good install, I would definitely buy one again for a new build or as an upgrade to an existing power supply.

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

    Rated 5 out of 5 stars

    Lit.

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

    I needed an upgrade. I scored a 3080 ti and this is perfect. All the cables are clean.

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

    Rated 5 out of 5 stars

    Quiet & reliable

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

    Very quiet and easy to install thanks to it being modular.

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

    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.

    Works great, Fully modular and quiet. Running this with a 5800X, and 3080TI.

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

    Rated 5 out of 5 stars

    Good psu

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

    Great power supply easy to install looks good in my pc case

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

    Rated 5 out of 5 stars

    It's nice

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

    So it thought I had a 650 in my PC well I forgot that 4 years ago I swapped it for a 750 so when I upgraded my graphics I bought this power supply it was still worth it cause it runs quieter then my old one

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

    Rated 5 out of 5 stars

    PSU

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

    Good PSU quality components. I can see this thing lasting me over 7 years easily. Plenty of options for power and fully Modular. It's quiet and doesn't create much heat with my rtx 3070 and i7 13700k. The fan barely goes on and very quiet with the magnetic fan design

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

    Rated 5 out of 5 stars

    powerful battery

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

    I recently built a pretty powerful pc setup, and this battery has been plenty enough W and ran very smoothly. Glad I went with this option. very simple and easy to plugin all the ports.

    I would recommend this to a friend