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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 15 Showing 281-300 of 1,782 reviews
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Great Power Supply!

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

    This is a great power supply—it powered my 4080 Super very well and still does. Very reliable. I would highly recommend it, 10/10.

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

    Rated 5 out of 5 stars

    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.

    Im able to save space as it is fully modular and gets the job done. Power’s everything with no issues.

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

    Best Power Supply In the Game!

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

    The CORSAIR RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply is a top-tier choice for those seeking reliability and efficiency. Its 80 PLUS Gold certification ensures high energy efficiency, minimizing wastage while delivering consistent power to the system. The fully modular design provides flexibility during installation, allowing users to manage cables easily for a clean build and optimal airflow. With an 850W capacity, it offers ample power for high-end systems, including gaming rigs or workstations. Additionally, the Zero RPM fan mode ensures silent operation under low to moderate loads, enhancing the overall user experience. Corsair's reputation for durability and performance further solidifies this power supply's appeal. However, for users with more budget-friendly builds, the price might seem slightly steep. Overall, it's a reliable investment for those prioritizing quality, efficiency, and a modular design in their power supply.

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

    Rated 5 out of 5 stars

    Great Power Supply for the Price

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

    Fully modular and easy to install in system. No hiccups and straight forward use.

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

    Rated 5 out of 5 stars

    Works like it should

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

    Works great, no issues and I've had it for awhile.

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

    Rated 5 out of 5 stars

    Great psu

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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.

    Two years running strong. Hopefully may to come with the gold rating

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

    Rated 5 out of 5 stars

    Power Supply, Turn it On!

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

    This power supply is bound and determined to get you going!

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

    Rated 5 out of 5 stars

    The best for gaming.

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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.

    Beefy power supply for the newly add gpu of mine, works flawlessly and extremely quiet. Never doubt a Corsair product!!

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

    Rated 5 out of 5 stars

    Corsair PSU

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

    More than enough power for my 4070ti quiet and cool

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

    Rated 5 out of 5 stars

    5 Star

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

    Been working great so far. Runs super quiet and is more than enough power for future upgrades

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

    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.

    Easy to install and setup. More than enough power for my componets.

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

    Power bank

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    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Durable and easy to install with a little extra work

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

    Rated 4 out of 5 stars

    Solid PSU

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

    Well built PSU with plenty of extra power and the Gold rating gives peace of mind about the power going to my components. Cables are super strong and quality feeling and it going on sale was really well timed.

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

    Rated 4 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.

    Good Power Supply. l really like the fully modular chords. installation was easy but the cords where thicker and harder to manage than i thought it would be.

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

    Rated 5 out of 5 stars

    Works well and quietly

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

    Plenty of power and connections for my full tower with multiple devices. Quiet too.

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

    Rated 4 out of 5 stars

    Good psu, make sure your case will fit it

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

    Good power supply. Works great, fully modular, runs almost silent. The only problem I had was that I had to move my hard drive cage to get it in.

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

    Rated 5 out of 5 stars

    Amazing

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

    It runs my 3090Ti and overclocked 3700x beautifully, and has durable cables.

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

    Upgrade from 650w

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

    Nice PSU. Bought with a 4070super. Just as quiet as my old 650w. All cables included. Easy install.

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

    Rated 5 out of 5 stars

    Sold psu

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

    Works exactly as it needs too. More power than my build needs but keeps it running fine with my gpu cruising.

    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.

    Easy to install and has been working great for my upgraded PC.

    I would recommend this to a friend