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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

Pros mentioned filter

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 25 Showing 481-500 of 1,846 reviews
  • Pros mentioned:
    Noise level

    Rated 5 out of 5 stars

    The Best 80+ Gold 850w Available

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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.

    Simply the best 850W 80+ Gold PSU available. Better than many more expensive platinum or titanium models. Top quality components for great peace of mind, and nearly silent. What's not to love?

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

    Rated 5 out of 5 stars

    Great PS

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

    Nice Power Supply. I bought this for my son's new rig and I'll be buying one for mine soon too. Plenty of power and runs quiet and cool. if you're in the market it's a great PS to purchase.

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

    Rated 5 out of 5 stars

    A nice quiet power supply

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

    This is a nice quiet power supply. After benchmarking it with some load, the performance is stable. Powering a Rizen 5600x with an RTX3070 and 3 SSD drives in a Corsair 280X case.

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

    Rated 5 out of 5 stars

    Good power

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

    Good quality ! I just purchase the unit and would update once I had it for some time. This feet’s perfectly the 4000d airflow from Corsair O Olán to get the new amd chipset and a 3080 when I can

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

    Rated 4 out of 5 stars

    Good Quality PSU

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

    Works excellently, only downside is that the PCIe cables for the GPU are split into two 8-pin power connectors. This makes it seem like you are supposed to daisy chain the GPU, instead you should use two separate 8-pin PCIe power connectors for the GPU, it is also really hard to hide the second set of connectors on the cables affecting the appearance inside your case.

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

    Rated 5 out of 5 stars

    Everything you need.

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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.

    Fully modular Excellent gold rating efficiency Large protective encasing 2018 redesign with quiet fans Ready for X570 and RTX 3080 and Big Navi Price is right as most competitors with cost $40 more

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

    Rated 5 out of 5 stars

    New Build Power Supply

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

    I purchased this power supply for a new computer that I built and it provides all the power I need. It's running a high end AMD graphics card and high end Intel processor.

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

    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.

    One word: solid. Powers everything with room to add more things to it. Powers a computer with 8 RGB fans, a decent motherboard, and a 5600x at the helm without issue. Made my PC build easy.

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

    Rated 5 out of 5 stars

    Amazing PSU

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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 an amazing power supply. I would recommend this version of the RM 850x because it comes with more cables than the newer version and the cable quality feels higher.

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

    Rated 5 out of 5 stars

    Quiet, I’m sleeping!

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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 price for the quality! Smooth and quiet operation. I was surprised when I turned on the PC that you couldn’t hear anything! All I hear it the spinning of my fans!!!! Great job Corsair!

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

    Rated 5 out of 5 stars

    Always Corsair.

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

    You can’t go wrong with Corsair. From all the other options out there for a power supply, I always find myself circling back around to Corsair. You can feel confident that your getting your money’s worth with this power supply.

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

    Rated 5 out of 5 stars

    Worth it!!

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

    Got this to replace my old PSU. Easy to install and fully modular!!! The cables are a little short for my liking but all cables work and it gets the job done. Worth it! I recommend!!

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

    Rated 5 out of 5 stars

    Super strong and convenient

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

    Best power supply. So many options with the wires it comes with. Don’t have to have so much unnecessary stuff plugged and in the way in the case. And it’ssuper strong.

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

    Rated 5 out of 5 stars

    Upgrade my PC with this great PSU!

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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.

    Replaced my existing 450watt psu in my gaming PC. So far so good! Runs cool & quiet. Currently powers my 3070, enough power for any upgrade. Would recommend to my pc building friends.

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

    Rated 5 out of 5 stars

    Top of the Line

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

    Love corsair psus, every other name brand ive come across ive gotten one brand new out of box that was broke. Corsair never lets me down, great power supply.

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

    Rated 5 out of 5 stars

    Great Power supply for future proofing

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

    Corsair offers good products especially power supplies such as the RMx series. From previous experience, these are great especially for those who want to run an RTX 3000 series or above.

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

    Rated 5 out of 5 stars

    It does the job!

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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.

    Always been a fan of Corsair and this power supply is no different. 850w and gold certified$145 is solid if you ask me. Having fully modular cables is a plus as well. No complaints whatsoever.

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

    Rated 5 out of 5 stars

    Excellent Unit

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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 went overkill on my power supply to get a 80+ Gold rating and a modular unit. So with that being said I love how simple this was to use and it’s great not having to worry about hiding unused cables

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

    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.

    Easily installed into older Dell XPS 8700, a bit tight, but worked out well. I like the modular units better, you only need to connect what you need, so no extra cables laying in case. More than enough cables supplied.

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

    So far so good an absolute beast of a power supply for my new pc build It’s currently running in a 4000d with a 3070 and Ryzen 7 5800x! It’s been running for more than 2 weeks now

    I would recommend this to a friend