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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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Cons mentioned filter

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 42 Showing 821-840 of 1,846 reviews
  • Pros mentioned:
    Noise level

    Rated 5 out of 5 stars

    Quiet

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

    Nice PSU. Extremely quiet. Hope this will run overclocked ryzen 5900x and RTX 3080/big navi.

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

    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.

    works amazing and i love that its modular so i don't have all the extra cables hanging around

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

    Rated 4 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.

    Great power supply with lots of cables depending on your setup. My only complaint is that they should have included individual sleeved cables with interlocking combs to complete what could have been a professional look.

    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.

    Excellent 850w power supply. Have had no problems with it.

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

    Rated 5 out of 5 stars

    Nice

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

    Excellent upgrade from my existing power supply. Very quiet too!

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

    Good modular PSU, comes with everything you need and allows for good cable management

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

    Rated 4 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.

    I bought this on an excellent sale and it has more than enough power for my build. I also recommend this solely because it is a modular power supply meaning you can have Better cable management by not having to have every cable tied up in your case.

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

    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.

    I have added extra items to my pc since I bought it 5 years ago. This provides the extra power that I needed to run my pc.

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

    Rated 5 out of 5 stars

    10/10 PSU

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

    One of the best power supplies I’ve worked with. 10/10 and would recommend getting.

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

    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.

    It can GREAT power supply and great packaging but it is an overkill for my build.

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

    Rated 5 out of 5 stars

    Corsair 850x

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

    Wanted extra power for custom build PC, got plenty of wattage for graphics cards and peripherals.

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

    Rated 4 out of 5 stars

    Solid PSU

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

    Had a CX750M for years with no issue, needed something more robust for a 3090. Cables seem a bit thicker ... maybe that's robustness at work. Fully modular, does the job, is super quiet at idle which is nice.

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

    Rated 5 out of 5 stars

    Amazing Product

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

    Power supply comes with 10 yr warranty. I have had zero problems with the product.

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

    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.

    Great power supply, the cables are a little short to cable manage well but are adequate.

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

    Rated 5 out of 5 stars

    Rm 850x

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

    Upgraded to this PSU to power a 3080 build. It works perfectly with 0 issues.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Is this the PSU for you?

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

    Gold baby, that's what i'm hoping for anyways... Corsair cut their teeth on PSU's so I am a believer. I am a little disappointed with the set of cables that came with the unit. I could care less if they are sleeved or not, as long as they are flexible... these are not too flexible people, I was thinking my house would start on fire by how forcefully I had to bend them to plug them in... I trust the PSU, but not the cables, would rather have rubber insulation and drop the cheasy cheap sleeved stuff and just get back to some good quality PSU's and connectors.

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

    Rated 5 out of 5 stars

    Perfect for my 2080 Graphics Card

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

    Provides plenty of power for my new set up. Running the new 2080 graphics card paired with a ROG Maximus X motherboard.

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

    Rated 5 out of 5 stars

    Good purchase

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

    Great battery. Name Brand, modular, exactly what you are expecting from best buy.

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

    Rated 5 out of 5 stars

    Very reliable.

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

    Fantastic PSU. Very reliable. Purchased on 9/19 and as of today 10/20 It's running strong.

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

    Rated 5 out of 5 stars

    Excellent PSU

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

    All I can say is that it’s overkill but exactly what I needed. Gets the job done and it’s quiet.

    I would recommend this to a friend