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Customer Ratings & Reviews

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The comparable value price is $169.99

Customer reviews

Rating 4.8 out of 5 stars with 314 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 4.8 out of 5 stars

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95%would recommend to a friend

Customers are saying

Customers enjoy the RMx Series RM850x power supply for its overall performance and quiet operation, with many appreciating the zero fan mode. The fully modular cables also make cable management easier, and the installation process is straightforward. With its adjustable fan and good modularity, this power supply is a popular choice for those needing ample power.

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 5 Showing 81-100 of 314 reviews
  • Pros mentioned:
    Cable management, Noise level

    Rated 5 out of 5 stars

    As usual, a quality psu from corsair

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

    zero fan mode is awesome. Has all the power cables I could ever need and then some. Nice to see they finally left the rubber coated wires in the past and started offering some cable combs as well.

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

    Rated 5 out of 5 stars

    Works perfect, even under heavy load

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

    Overclocking a modern high end build has posed no issues for this PSU, and it runs very efficiently and silently.

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Rated 5 out of 5 stars

    RM850x Working Great and Great Deal

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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 Haven't put this power supply to the longevity test yet. However, I have loaded it up quite well at this point. It seems to be great so far. It has an adjustable fan and modular cable design is great. It should have all of the cables you may need.

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

    Rated 5 out of 5 stars

    Works as expected, easy to use

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

    Plenty of power for all but the highest end graphics cards. Good modularity for easy installation

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

    Works great

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

    Love modular PSUs for the simple fact you only use the plugs you need and not have extra all over the place, but also leaves room for upgrading, this one will keep me going for a while.

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

    Rated 5 out of 5 stars

    Great quality and performance

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

    Really good power supply with more than enough power to run my 5070 and ryzen 9 5950x. Runs quite and couldnt ask for more out of a quality power supply

    I would recommend this to a friend
  • Pros mentioned:
    Cable management

    Rated 5 out of 5 stars

    Best power supply

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

    Corsair is always my go to when it comes to power supplies. Reliable and good thick cables come with box.

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

    Rated 5 out of 5 stars

    Power supply

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

    Great product No noise Working fine so far I would strongly recommend it

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

    Rated 5 out of 5 stars

    Reliable and Easy PSU

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

    Very quiet and reliable power delivery for my components, and easy to organize with the cords marked

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Works great

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

    Bought after we realized my fiance's old one wouldn't be able to handle his new graphics card. Works as intended.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Corsair power supply

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

    This works great and the modular is a huge improvement from my original PSU.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance
    Best Buy Employee

    Rated 5 out of 5 stars

    Good features

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

    Good psu no complaints would reccomend. It has a fan speed knob which is cool

    I would recommend this to a friend
  • Pros mentioned:
    Cable management, Overall performance

    Rated 5 out of 5 stars

    Psu good quality

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

    Works good so far. No issues. Like the make of the cables.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Solid!

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

    Works great with my build! the grills look cool. Its a power supply, its supposed to be boring. I do think that it was pricey, but thats on bestbuy.

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

    Rated 5 out of 5 stars

    Powerhouse

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

    This PSU has no power issues at all. I run battlefield 6 with discord and other apps running and it doesn't break a sweat. And for the price its the perfect choice. Would buy again

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

    Rated 5 out of 5 stars

    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.

    No issues, handels all my equipment as needed, and doesnt set my breaker off in my old house

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

    Rated 5 out of 5 stars

    Excellent Upgrade

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

    I upgraded most of my PC components about a year and a half ago (Motherboard, Processor, Graphics Card, Memory, PC Case) but reused my old 750 power supply which wasn't fully modular. I decided to get this 850 fully modular power supply for the added flexibility and to have some extra power for my components and it has worked flawlessly so far. Great product!

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance, Power supply capacity

    Rated 5 out of 5 stars

    Quality 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.

    Great power supply. More than enough power for my custom build. Corsair makes quality products. Performs great.

    I would recommend this to a friend
  • Pros mentioned:
    Installation ease, Power supply capacity

    Rated 5 out of 5 stars

    Beast!

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

    What a beast of a PSU! I loved this thing and it is more than enough for my build. It is also really easy to install!

    I would recommend this to a friend
  • Pros mentioned:
    Installation ease

    Rated 5 out of 5 stars

    Love Corsair

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

    Now issues really easy to use. Current set up with a 5070ti and ryzen 7 9800x3D

    I would recommend this to a friend
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