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Customer Ratings & Reviews

Your price for this item is $151.99
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Customer reviews

Rating 4.8 out of 5 stars with 1341 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 4.8 out of 5 stars

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Cons mentioned filter

96%would recommend to a friend

Customers are saying

Customers express satisfaction with the RMx Series RM1000x power supply's high power output, strong performance in high-performance systems, and quiet operation. Many appreciate its modular design, ease of installation, and the included cabling. While some users note the larger size of the unit, the overall feedback highlights its positive attributes.

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 2 Showing 21-40 of 1,341 reviews
  • Pros mentioned:
    Power

    Rated 5 out of 5 stars

    Great for a 4090 build

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

    Upgraded from a RM850 to this psu to ensure I have enough power supply for my 4090. No problems at all. Everything fits perfect in my 5000D airflow case.

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

    Quiet and Powerful

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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 1000W is quiet and does the job well. The cables it comes with are very solid and long enough to run the length of a large computer case. The build quality is great as with all Corsair products. If on sale, this is a great buy.

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

    Rated 5 out of 5 stars

    Efficient

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

    I love this beast of a PSU. It’s more than enough for my 4080 and 5900x combo since my 650w wasn’t going to cut it, and I will be using it for years to come.

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

    Rated 5 out of 5 stars

    Amazing.

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

    If you care about cable management, tons of power for your pc and a quality product then this PSU is for you. Not only is it fully modular, Corsair sells colored sleeved cables for this psu to match your system and they are fantastic.

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

    Was a little overkill for my system at first. Recently just upgraded to a newer bigger motherboard and AMD chip with my 3080 GPU. Works great! Haven't had any issues.

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

    Great psu, and very good deliver. This power supply handles very well, no problems at all i can promise you that.

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

    Rated 5 out of 5 stars

    Corsair 1000W

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

    This Corsair Power supply is amazing, i jave lot of stuff conected to my Gaming pc and it handels all runing a 3090 Ti no issues, totally recommend

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

    Rated 5 out of 5 stars

    Nice

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

    Works well and fit well into my case, had plenty of cords and ties.

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

    Rated 5 out of 5 stars

    Future proofing

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

    I bought it for when I upgrade. It still works great after the upgrade and going strong! Same brand as my lower supply and still reliable.

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

    Rated 4 out of 5 stars

    More Power!

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

    Needed more power once I got my new GPU(Suprim RTX 4090) This power supply unit being modular makes it pretty easy to set up too. I give it a 4/5 stars! The picture added with this is the PC build with the power supply unit powering everything to show it holds up with a pretty good gaming rig..

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

    Rated 5 out of 5 stars

    Amazing PSU

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

    Lots of ports, very good performance. I would say it can handle the load I need.

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

    Rated 5 out of 5 stars

    1000 watts

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

    All a man needs, motherboard needed 2x cpu 8 pins and 4090 needed 4x gpu 8 pins. Forced to upgrade to this, but she good. Please clap.

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

    Rated 5 out of 5 stars

    Power you need

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

    I really needed this to power my PC and I have had ZERO problems with it. Absolutely great investment

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

    Rated 5 out of 5 stars

    Psu

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

    Very simple to build with this, the quietest PSU I've ever had. Loving it so far

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

    Rated 5 out of 5 stars

    Corsair

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

    This power supply leaves me with enough power to eventually upgrade to a 40 series RTX. It also performs as expected and will hopefully be in my PC for the long run.

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

    Rated 5 out of 5 stars

    With great power comes great responsibility!

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

    Works as expected! Great power! Keeps pc running without any concerns!

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

    Rated 5 out of 5 stars

    good

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

    very good source of power I built my pc and everything works perfectly

    I would recommend this to a friend
  • Cons mentioned:
    Size

    Rated 5 out of 5 stars

    Great quality

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

    Works great. Modular cables are nice. This PSU is pretty long so cable management is a little tough in a smaller case

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

    Rated 5 out of 5 stars

    Psu rm1000

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

    Excallent power supply no problem run in mine an the wifes pc.

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

    Another 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.

    This is a great unit! Recommend CORSAIR PSU's***` My last psu 750w which is 8 years old is still kicking! I got this for my new build and it comes with a 10 year warranty! I started working on computers back when CS 1.5 was a huge deal. I've installed many different power supplies for friends and family. None of these ever failed, just retired for upgrades! I'm sure this unit will stand the test of time.

    I would recommend this to a friend
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