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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 10 Showing 181-200 of 1,782 reviews
  • Pros mentioned:
    Power supply

    Rated 5 out of 5 stars

    More Than Enough Power

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    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, Power supply

    Rated 5 out of 5 stars

    Corsair RM850x

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

    Solid brand, great performance. Supports my PC system, including a 4070ti, with room to spare.

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

    Rated 5 out of 5 stars

    Corsair Never Compare.

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    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
  • Pros mentioned:
    Modular, Power supply

    Rated 5 out of 5 stars

    Corsair 850 watt 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.

    I can't complain it does the job and does it well it's a great rated power supply and it being semi modular really cuts down on the case clutter

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

    Rated 5 out of 5 stars

    Totally happy with this 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.

    Totally silent for non-gaming activity. The graphics card fans are louder than the fan on this power supply. More than enough cables were supplied for my Intel i7-12700k and graphics card.

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

    Rated 5 out of 5 stars

    Powwrful and modular

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

    850wof power for your desktop and components. Comes with cables for its modular design.Easy to install, operate, and wire-manage due to its modular design. Great product.

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

    this is a great power supply. it hooks up well. it provides great power

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

    Rated 5 out of 5 stars

    great 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.

    I used this power supply to build a new system. It has great cable connections, is quiet, and so far has been very dependable.

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

    Reliable PSU

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

    Never had a problem, works really well with a 7900xtx

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

    Rated 5 out of 5 stars

    Corsair at its finest

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

    If corsair knows anything besides cases its power supplies. Excellent power supply overkill for some but it helps when you want to add a bigger gpu or have RGB insanity. Super quit no complaints

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

    Unlimited Power!

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

    Super easy to install and works perfectly! Corsair just makes great PC gear

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

    Rated 5 out of 5 stars

    Easy setup, works great.

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

    Easy to set up even for a noob like me. Comes with clearly label wires, so switching was easy.

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

    Rated 5 out of 5 stars

    Reliable PSU

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

    Corsair is my go-to for reliable power supplies. Though they do support them with updated accessories (the nVidia 30 series specific cable for example), these additional cables are often very expensive.

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

    Rated 5 out of 5 stars

    Works Flawlessly

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

    Quiet, reliable, powerful, and works flawlessly!!!

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

    Rated 5 out of 5 stars

    Reliable and Strong

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

    Super reliable even through multiple power outages. Super duper quiet!

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

    Rated 5 out of 5 stars

    Great!!!

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

    Was a great replacement for my cheap old one I had from a different brand. Still works great to this day

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

    Go-to PSU

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

    Great power supply trusted brand Great price I should have gotten the white one tho.

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

    Rated 5 out of 5 stars

    Great Flexibility and Power

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

    Used for first build in 15 years. Excellent quality and reliable power. I like the included cables and was able to tailor for my build. Great flexibility

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

    Rated 5 out of 5 stars

    Dependable and easy to install

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

    This power supply is easy to set up. The modular nature of it allows for far simpler cable management.

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

    Rated 5 out of 5 stars

    BEST PSU

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

    I have upgraded from a 600w coolmaster PSU and after upgrading it has been keeping my pc nice and running. To be honest after upgrading the PSU the corsair PSU fan has not ran or turned on. meaning it all ready cool delivering nice juice to my parts. i highly recommend this. love how im am able to remove the connectors.

    I would recommend this to a friend