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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

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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 13 Showing 241-260 of 1,782 reviews
  • Pros mentioned:
    Noise level

    Rated 5 out of 5 stars

    Nice PSU for the price

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

    Bought it to replace what I thought was a bad PSU but turned out the CPU was actually fried. Anyway, this one is way quieter and seems like it will last a looooong time. I actually bought a few other Corsair parts because I like this so much and overall I'm very happy with all of them.

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

    Rated 5 out of 5 stars

    love it

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

    My old PSU sounds like a tractor at full load, so I need a quiet PSU and this one is perfectly quiet. The quality looks good, and it's easy to install.

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

    Rated 5 out of 5 stars

    Awesome

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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.

    It works great and has served me incredibly well since I got it.

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

    Rated 5 out of 5 stars

    Another great Corsair product

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

    Bought this for peace of mind for future upgrades on my pc. It was very easy to install an works great

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

    Rated 5 out of 5 stars

    Excellent quality

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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 helps remove unwanted cables and also allows cable management. Fan noise is very silent.

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

    Rated 5 out of 5 stars

    CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Mod

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

    Corsair RMX Series, RM850x, 850 Watt, 80+ Gold Certified, Fully Modular Power Supply (Low Noise, Zero RPM Fan Mode, 105°C Capacitors, Fully Modular

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

    Rated 5 out of 5 stars

    Quiet and works great

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

    Extremely quiet easy to install the power supply came with more than enough accessories for everything in the pc.

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

    Rated 5 out of 5 stars

    Golden standard for price/performance

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

    The rm850x is great. Its quiet, consistent, and modular with plenty of cables. Well worth the price.

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

    Rated 5 out of 5 stars

    bought a new power to replace my old one

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

    worked very well. I had to upgrade my power supply. helped with cable management. very pleased with the purchase

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

    Rated 5 out of 5 stars

    Awesome product

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

    Runs strong. Price was on point more power than I needed. It’s perfect!

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

    Rated 5 out of 5 stars

    One of the best

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

    Great product works amazing. I have always enjoyed corsair products.

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

    Easy to manage

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

    Affordable for a high end build. All cables are detached making it easy to get rid of any unused cables making it easier for cables management.

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

    Rated 5 out of 5 stars

    Great little power supply.

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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.

    Powerhouse. Still usung with no issues. Never scimp on power supplies.

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

    Rated 5 out of 5 stars

    Power supply

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

    Easy installation and easy to follow instructions and quiet fans

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

    Rated 5 out of 5 stars

    Quiet and powerful

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Plenty of power for my mini itx computer. I would recommend this product. Great wire management and plenty of cables. Quiet and keeps my system cool.

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

    Rated 5 out of 5 stars

    PSU for the win

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I actually have bought 2 of these now for my builds and it fits and works so well with my PC. I would say if you were to get one, get a big enough case like the 5000D Corsair. It was a bit small for my other case (4000X) that I have but still fit just a bit snug. Also it comes with all the cords and such but if you wanted to get different ones go on amazon. Recommend highly!

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

    Rated 5 out of 5 stars

    PSU

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

    Quiet Clean Power. have used dozens of these with 0 fails

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

    Rated 5 out of 5 stars

    Fantastic

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

    Second one I've purchased for a PC build. Easy to use and super reliable.

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

    Rated 5 out of 5 stars

    Great product

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

    Solid and reliable, very convenient to be able to use the connections you need vs figuring out where to put the cables your not using.

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

    Rated 5 out of 5 stars

    Corsair RMx Series 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.

    Replaced a 750W power supply on my gaming computer with the Corsair 850W power supply. Lots of power, easy to install, and I think it looks great!

    I would recommend this to a friend