Year-End SaleEnds 1/1/26. Limited quantities. No rainchecks.

Skip to content
Main Content

Customer Ratings & Reviews

Your price for this item is $151.99
Clearance
The comparable value price is $189.99

Customer reviews

Rating 4.8 out of 5 stars with 1347 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 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 3 Showing 41-60 of 1,347 reviews
  • Rated 5 out of 5 stars

    Another great product!

    |
    |
    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
  • Rated 5 out of 5 stars

    Best Power Supply I’ve had.

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

    A great solution to my problem! I have a prebuilt configuration pc so they put the basic power supply in it. I bought this after purchasing my 3090 graphics card and it runs perfect now with no hiccups. The modular power supply makes it super simple to install and leaves little clutter in your case

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

    Rated 5 out of 5 stars

    Solid quality and plenty of cables!

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

    I needed more power for my gaming PC and this power supply really delivered!

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

    Perfect

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

    I use it on my PC with an RTX 4080 Super, liquid cooling from icue link and a Ryzen 7 7700x processor from AMD, it is perfect

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

    Rated 5 out of 5 stars

    Works as intended, powers my 4070 ti

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

    Works as intended, powers my 4070 ti with no problem

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

    Rated 5 out of 5 stars

    It's a PSU

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

    Does the job. Had no issues so far and never have with a PSU from Best Buy.

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

    Powerful and works perfectly as expected.

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

    Love this product as it features high quality and premium texture to the power cables. It’s also a smart power supply as the fans only run when they are needed to run and not run because the computer is just on. Price could be a bit lower but it guarantees that it’s functional for the next 10 years.

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

    Rated 4 out of 5 stars

    solid and reliable

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

    Got this to replace an EVGA ps which died too soon. So far, I have no complaints. More than enough power, cables and ports to power any system

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

    Rated 5 out of 5 stars

    Good price and reliable!

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

    Great power supply Evga always short on me these have yet to do it !

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

    Rated 5 out of 5 stars

    Great PSU

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

    Works great had to replace a 650 semi-modular, and this now does the job.

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

    Rated 5 out of 5 stars

    Good

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

    Best power supply Corsair RMx Series, RM1000x, 1000 Watt, 80+ Gold Certified, Fully Modular Power Supply

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

    Amazing

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

    Runs 4 cards with ease, cpu at full juice and with wattage to spare. Overkill but it works great. This is my 3rd corsair unit and none have died yet, with my oldest unit over 7 years old. Cons 3 cpu cables....the 3rd should have been an extra gpu cable...or atleast one more gpu cable. 3 cables was an odd number had to grab 4 from another unit.

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

    Rated 5 out of 5 stars

    Corsair 100w psu

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

    Perfect PSU pegged everything in my system, and diet perfect

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

    Rated 5 out of 5 stars

    great power supply

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

    great power supply, purchased to run 4090. would recommend.

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

    Rated 5 out of 5 stars

    Great power supply

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

    Great power supply. Working fantastic with my Ryzen 9 5900x and an asus strix 3090 oc.

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

    Rated 4 out of 5 stars

    Best option out there. Zero issues

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

    Good 1000 watt power supply pretty quiet fan with plenty of upgrade headroom for my pc

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

    Rated 5 out of 5 stars

    Quiet pcu

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

    The most quiet 1000w pcu you’ll get from Best Buy.

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

    Great 1000 watt psu

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

    Great psu and decent price. Will be buying more for other builds.

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

    Rated 3 out of 5 stars

    Solid psu

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

    Good power to supply my pc with all it needs. Works great for what it is intended to power my I7 12700k and Asus 3080ti tuf oc gpu. Con- cables are chunky and a bit rigid. Corsair premium psu cables should be included as standard as these cables that come with it are most likely to be replaced. Makes it hard to cable manage in a tight case. Otherwise this would be a 5 star review.

    I would recommend this to a friend
    • Brand response from Corsair
      Posted .

      Hi,

      Thank you for your feedback. If you have any questions or concerns regarding any of our products, we'd be happy to assist: help.corsair.com

      -Albert CorsairGaming

  • Rated 5 out of 5 stars

    So far so good

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

    Bought as an upgrade from theraltake 850w. Nice cords makes for easy cable management. Plus extras just in case. Sits with logo upside down in my case. Fan to the floor, ventilation below.

    I would recommend this to a friend