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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 31 Showing 601-620 of 1,846 reviews
  • Pros mentioned:
    Modular

    Rated 5 out of 5 stars

    Solidly Built and Quiet

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

    Two 8 pin EPS connectors. Completely modular. Stable power delivery. The 24 pin cable is slightly thinner than the cable on the 1000w unit making routing/bending somewhat easier.

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

    Rated 5 out of 5 stars

    It’s a PSU

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

    No issues. You pretty much get what’s described when it comes to a PSU. Good bang for your buck, has more power than most PCs will ever need.

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

    Rated 5 out of 5 stars

    Good psu

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

    Works really well does what it says is good quality. Not much more to say about a osu but is fully modular and comes with bag for cables

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

    Rated 5 out of 5 stars

    Future-Proof

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

    Solid build quality, runs quiet at full load, comes with 2 x EPS & 6 x PCIe connectors ready for the next Gen Hardware.

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

    Rated 4 out of 5 stars

    handles almost anything

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    this power supply will handle almost anything you throw at it, if you only want a performance computer then this power supply will suffice, it will not help when you want a top of the line computer and also want to water cool it since that requires at least 200 more watts. anything else if fine for it

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

    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.

    Currently I just bought this power supply, it is great, its way of working in silence, it is very comfortable, I recommend it.

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

    Rated 5 out of 5 stars

    Solid product by corsair!

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

    So far so good. Might need to update to a more powerful PSU as I keep adding more stuff but it's still holding up quite well.

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

    Great PSU!

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

    Great PSU! Easy and simple to install, as well as very straightforward cables. Using this to power a 5900x and an EVGA XC3 Ultra RTX 3080.

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

    Rated 5 out of 5 stars

    It Just Works

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

    Great PS, has way more than enough to fuel my mid-high end RPG gaming build. Corsair is reliable and the box is simplisticly stylized. Great choice.

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

    Rated 5 out of 5 stars

    Great 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 got this for my new computer build. I like how it's modular so that my rig looks clean inside. No problem powering a RTX 3080 with it!

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

    Rated 5 out of 5 stars

    Great PSU

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

    Built my first PC with this and it is doing great. enough power for a Ryzen 9 a ton of rgb and RTX 3070 ti.

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

    Rated 5 out of 5 stars

    Never fails

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

    This is the power supply i use for every build and it has never failed me, it is simply to put together and gives you tons of cables to work with

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

    Rated 5 out of 5 stars

    Great psu!

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

    Perfect with my 3070ti and has plenty of headroom for upgrades in future. Corsair psu’s are a can’t miss especially this one.

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

    Rated 5 out of 5 stars

    Good 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.

    Upgraded from a Corsair 650 watt 80 plus bronze which had a loud fan. The RM850x is very quiet. No problems running a core i7 8700k and a RTX 2080ti.

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

    Rated 5 out of 5 stars

    Best PSU from Corsair

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

    Best PSU for Corsair. Returned my CX 750M and got this instead. Much more reliable for non overclockers and for the die hard overclockers.

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

    Rated 5 out of 5 stars

    Great deal

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

    Corsair makes some of the best power supply on the market and this 850 watt will handle all your needs and BestBuy has the best price.

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

    Rated 5 out of 5 stars

    Great power supply. No issues.

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

    I've had no issues with this power supply. It is working great. Seems well made. Supplied cables were excellent. I would definitely recommend.

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

    Rated 5 out of 5 stars

    Works without issue as expected.

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

    Never had any issues, modular and enough headroom for a 3080 once I can upgrade. Could be smaller but that’s just the nature of an 850W.

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

    Rated 5 out of 5 stars

    So epic

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

    Super nice psu, great cables all black and so happy it’s fully modular, haven’t had any issues with power delivery either.

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

    Rated 5 out of 5 stars

    AWESOME

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

    Awesome power supply. Tons of power and runs real cool and quiet. Not the cheapest nor the most expensive power supply but was well worth the money.

    I would recommend this to a friend