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

Skip to contentGo to Product SearchGo to Footer
Main Content

Customer Ratings & Reviews

Your price for this item is $72.49
Clearance
The comparable value price is $144.99

Customer reviews

Rating 4.8 out of 5 stars with 1846 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.8 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

96%would recommend to a friend

Customers are saying

Customers are pleased with the RMx Series 850W power supply's ample power, modular design, and quiet operation. Many appreciate the high-quality components and easy installation. While some users reported an audible coil whine, the majority found the unit to run cool and efficiently. The positive feedback on quality and ease of use outweighs the relatively few negative comments.

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 18 Showing 341-360 of 1,846 reviews
  • Pros mentioned:
    Modular

    Rated 5 out of 5 stars

    great

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

    works great, easy to use, and is fully modular, so cable management is easy

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

    Rated 5 out of 5 stars

    Good quality PSU at a good price

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

    I like this PSU a lot. It's modular, and the black cables look good in pretty much any case. As other reviewers have mentioned, the cables themselves are a little stiff and slightly hard to work with if your case is really tight or small. That said, I wouldn't let that deter you from buying this unit unless you do really have a very cramped case. It's good quality for a good price.

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

    Rated 5 out of 5 stars

    Corsair Power Supply

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

    This power supply is quiet and fully modular and comes with all the power cables needed.

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

    Rated 5 out of 5 stars

    Perfect for any gaming pc

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

    For the price this power supply is phenomenal. It has enough for 2 gpus unless you're trying to run 2 3090s. Cable are clean. The fully modular aspect is nice having everything even the 24 pin adapter but modular is a bonus. It has 2 cpu 8 pin which is a nice bonus for x570 motherboards that can use 12 pins for the cpu and chipset power.

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

    Rated 5 out of 5 stars

    Great PSU for those power hungry GPUs

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

    My brother's system kept on crashing with an EVGA 850W bronze PSU, even with just a 3700X and a 3080 (both of which should consume less than 500W together). Purchased this PSU and his system never shut down more than 15 months later. Reliable and worth the price. Don't skimp on your PSUs.

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

    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.

    Very reliable, very quiet psu. No complaints. Would purchase again.

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

    Rated 5 out of 5 stars

    High quality power supply

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

    High quality power supply with nice, black, modular cables. Gets the job done!

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

    Rated 5 out of 5 stars

    Great psu

    |
    |
    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Quality power supply and enough cables to run anything

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

    Rated 5 out of 5 stars

    Great psu for the RTX 3080

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

    I bought this power unit specifically because it works well with the 3080 and the spike in wattage that sometimes occurs when using it. It comes with a lot of cables that are pretty stuff but are built well and tough. I have it powering a FTW3 Ultra 3080 and so far after months of use, everything is still working just fine.

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

    Great buy

    |
    |
    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It’s very quiet, easy to use... and the price is within reason

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

    Rated 5 out of 5 stars

    Power supply

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

    Really reliable power supply and good for mid to high end PCs

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Safe for those blind buy purchasers.

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

    This is a pretty solid choice for known good PSUs in a sea of garbage. Not much out there worth purchasing under 150, tbh. Quiet. Average ripple. Good regulation. All the protections and a 10 year warranty. Can't go wrong with this one. My only gripe is the heat shrink wrap on the motherboard connectors. They are a bit stiff and I had to cut the heat shrink down a few millimeters in order to get the cpu power cable to bend over to route into the hole that goes behind the mobo. I have yet to test this with shucked HDD's to see if it causes the 3.3v pin 3 PWDIS "issue". But it's a non issue either way.

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

    Rated 5 out of 5 stars

    Relatively Quiet and Future-Proofed My Rig

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

    I upgraded to this from a 550-Watt. The computer I was building wouldn't post so I replaced the PS first to rule it out (it was the mb.) Decided to go with this one, as it allowed me to add a video card down the road if I wanted to. I did, and it ... supplies power without making much noise. I've been using it daily for a month with no problems. 10/10 install was easy and makes electricity.

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

    Rated 5 out of 5 stars

    It is a great unit.

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

    It is a great power unit. It quiet and delivers enough power for my gaming PC.

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

    Rated 5 out of 5 stars

    Solid power supply

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

    Enough power to last through system upgrades. Runs quiet

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

    Rated 4 out of 5 stars

    Mostly solid

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

    Mostly good. Solid price point for the features you get. Fully modular, nice almost 'brilliant white' paint job, Gold rating. Fan is off until it hits a certain load/temp. Only 4 stars because if you're buying a white PSU it's almost primarily about aesthetics and the PSU cables while white don't look great. The way the wires bend on the 24pin makes it look like it's extruding and not a smooth bend like a CableMod cable. For a product like this, Corsair should've committed to making the cables top notch and charge more instead of cheaping out.

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

    Rated 5 out of 5 stars

    RM850x

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

    Quality. Quiet. Efficient. Best purchase I’ve had in a while

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

    Rated 5 out of 5 stars

    One of the better power supplies you can get

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

    great power supply. It's great quality and easy to use.

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

    Rated 5 out of 5 stars

    great

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

    works great! easy to use. compact. feels great. A+++++

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

    Rated 5 out of 5 stars

    Lifesaver

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

    Had to make an emergency purchase of this PSU after the plugs I had on one I shipped just wouldn't fit to the motherboard even though they should have. I was initially uncertain as this was a modular and I'd previously had a bad experience with a modular PSU, but all the plus on this one easily slid in and locked securely the first time.

    I would recommend this to a friend