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  • Front. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Alt View 11. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
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  • Alt View 29. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black.
  • Step-by-Step Instructions to Build a PC video 6 minutes 35 seconds
  • CORSAIR How to Build a PC - How To Video video 1 minutes 34 seconds

CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black

Model:
CP-9020200-NA
SKU:
6459244
Highly rated by customers for:
Your price for this item is $149.99

Customer reviews

Rating 4.8 out of 5 stars with 1785 reviews

Rating Filter

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

Pros mentioned filter

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 58 Showing 1,141-1,160 of 1,785 reviews

  • Great price and product

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

    After getting my pc looked at with Geek Squad bought this to fix my issues and haven’t had a problem since.

    I would recommend this to a friend

  • Current PSU I’m using

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

    The quality of the product itself is great! While it is steep in price, the purchase is a good one since it will last a great amount of time.

    I would recommend this to a friend

  • Solid 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.

    Solid psu. Was pleasantly surprised with how small it was compared to my 750 watt. Made fitments much less of a headache.

    I would recommend this to a friend

  • Power supply is a beast

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

    Couldnt be happier 1300w is definitely overkill but its prevented any issues from coming up related power source issues ans future proofs my build as well!

    I would recommend this to a friend

  • pick up order for PC

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

    great service at the location i picked up from. Ordered a power supply unit online and it was ready for pickup very fast.

    I would recommend this to a friend

  • Good PSU for Your PC Build!

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

    I always buy Corsair PSU when I build PC. It never failed me. So I just buy this brand all the time now. 850w is good enough if you have nvidia 3070 or less GPU. But if you have 3080 or higher GPU, look for at least 1000w or more PSU.

    I would recommend this to a friend

  • 850 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.

    Very well made easy to install instructions were good the cable construction was very nice and labels are clear

    I would recommend this to a friend

  • Amazing service

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

    Love this Best Buy, always greet you when you walk in and always willing to help you right away

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

    good power supply

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

    Good power supply. Quiet and no issues. Top rated brand

    I would recommend this to a friend

  • Great Unit

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

    This power supply works great, never had any issues lover corsair products

    I would recommend this to a friend

  • Fits like a glove

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

    Bought this supply powering a 3060ti and ryzen5800x. Left some margin to upgrade later to bigger graphics card. Only down side is wish it came with the braided cables to make install a bit easier. But great power supply so far!!

    I would recommend this to a friend

  • Quality product

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

    I run a RTX3080 and a i9 13900kf off of it and its staying cool even during stress test good quality parts aswell

    I would recommend this to a friend

  • Good fully modular PSU

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

    I upgraded my PC with a RTX 3080 and had to replace my old PSU. I found Corsair RM850x for a good price and it didn't disappoint. Sockets are promptly marked and installation was very smooth. Overall a very good power supply.

    I would recommend this to a friend

  • Great 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.

    Powers an i9 14900k, RTX 3070, 64GB RAM, and several hard drives.

    I would recommend this to a friend

  • Great

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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.

    Was struggling with what power supply to buy and John my go to tech guru pointed out this bad Larry right here and boom great choice

    I would recommend this to a friend

  • Great 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.

    Reliable and quiet. Module cables make it far easier by only connecting the cables that will be used and not have to have extra unused cables inside the case.

    I would recommend this to a friend

  • Great PSU, affordable and gets the job done

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

    Old PSU blew out in a surge. This replacement worked exactly

    I would recommend this to a friend

  • Solid

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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.

    Solid and has been holding up really well since purchasing.

    I would recommend this to a friend

  • Review

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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.

    Very good product, packaged nicely, instructions are detailed

    I would recommend this to a friend

  • Heavy duty brick

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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 was honestly surprised by how heavy the power supply was, upon inspection I could only see signs of quality in workmanship. I liked how the cables were braided but the motherboard power plug can be VERY stiff and hard to work with in tight corners.

    I would recommend this to a friend
Page 58, Showing 1,141-1,160 of 1,785 reviews
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