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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 1783 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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Cons mentioned filter

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 38 Showing 741-760 of 1,783 reviews
  • Pros mentioned:
    Noise level

    Rated 5 out of 5 stars

    Cool

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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.

    Modular power supplies are cooler than your non modular power supplys. Fan kickes on up under load so rarely ever any major heat

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

    Rated 5 out of 5 stars

    Nice power supply

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    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I upgraded from a 650 and it's quite nice. Install was pretty easy and I have a 3070 ti and also works great!

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

    Rated 5 out of 5 stars

    Awesome 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.

    Good price and topnotch product. It was easy to install and works like a champ!

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

    very good

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

    very good product thank you very much my friends from usa

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    Pay Attention to the Actual Part Number

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

    Pay Attention to the Part Number. There are two versions of this power supply at the time of this review. The RM850X marked with model: CP-9020200-NA (SKU: 6459244) has a total of four 6+2 pin PCI-E connectors. The RM850X marked with CP-9020180-NA (SKU: 6229601) has a total of six 6+2 pin PCI-E connectors. I got the wrong one but made it work by ordering an extra cable off of eBay. Some current video cards (like the EVGA 3080 FTW3) will require all six for your video card. This is very confusing, as both models are marked: "RM850X". Aside from Corsair having serious brain flatulence when labeling their power supplies, I have not had any issues with their units functioning appropriately. It is unfortunate that I had to spend more money, and had to wait on more parts before properly using my new items due to Corsair's poor decision.

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

    Rated 5 out of 5 stars

    Good power

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

    Nice power supply. A little pricier than the other option, but if you need more power, this is the one to get.

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

    Rated 5 out of 5 stars

    Great

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

    Works great, Corsair is a great well known brand and glad best buy supplies them. Excellent psu easy to use.

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

    Rated 5 out of 5 stars

    Great 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.

    Works well and gives plenty of cords! Fits like a charm and is quiet

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

    Rated 5 out of 5 stars

    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 really like this power supply, its handled every thing we've needed it to handle so far and no problems at all.

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

    Good product

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

    Good quality product, low noise, long cables. Very good!

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

    Rated 5 out of 5 stars

    Fixed my power issues

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

    My PC was blue screening and it turns out it was a power related issue. I installed this new power supply and it solved my problems.

    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.

    I love this power supply, completely modular and you can just feel the quality of the parts over other psu ive had. and fairly priced for quality and power

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

    Rated 5 out of 5 stars

    Premium PSU.

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

    Premium power supply, very quiet and efficient at maximum load, I have a RTX 3080 and Ryzen 7 5800x and my system is performing excellent.

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

    Rated 5 out of 5 stars

    Great Purchase

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Super Reliable and Effiencent. I do tons of gaming and editing an have 0 issues

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

    Couldn’t ask for more!

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

    it’s a clean and sleek power supply with fully modular cables that match the clean aesthetic. Honestly the best value for the price!

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

    Rated 5 out of 5 stars

    Buy it!

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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 for the money. The RMX series is better than the RM series due to the Japanese capacitors.

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

    Decent 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.

    Solid power supply, well constructed, good value. I purchased this for a mid/higher level gaming PC build. Easy to install.

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

    Great PSU

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

    Great price for something that can power more than enough components in your pc!

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

    Rated 5 out of 5 stars

    Corsair Review

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

    Perfect for my 2070 super and ryzen 9 5900x PC build

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

    Rated 5 out of 5 stars

    RX850X

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

    I enjoy this Power supply as it's nice and quiet untill it has a load enouh to turn the fan on. even when the fan is on still can't hear it.

    I would recommend this to a friend