Customers enjoy the RMx Series RM850x power supply for its overall performance and quiet operation, with many appreciating the zero fan mode. The fully modular cables also make cable management easier, and the installation process is straightforward. With its adjustable fan and good modularity, this power supply is a popular choice for those needing ample power.
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 4 Showing 61-80 of 310 reviews
Pros mentioned:
Power supply capacity
Rated 5 out of 5 stars
Great solid and quiet.
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I have been a corsair power supply guy for several years now. I was initially a EVGA guy but made the jump over and so far haven't gone wrong. I end up buying this unit for the new nvidia power connection. Stored the previous RM850e I had as a backup or for when I upgrade the wife pc in the future. This power supply is powering a 7800x3d, 32gb of ddr5 on a Asus B650e board, asus tuf 5700ti and all the other usual stuff.
I would recommend this to a friend
Pros mentioned:
Cable management, Noise level
Rated 5 out of 5 stars
Great quiet psu
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great PSU. The manual fan knob is an interesting feature but if placement of the tower doeant make that accessible, its not very usable. The cable management is great with the fully modular design. Very quiet as well.
I would recommend this to a friend
Pros mentioned:
Power supply capacity
Rated 5 out of 5 stars
Power Supply unit
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Was having trouble with my desk top crashing all the time. Then i bought a new graphics card and had Bestbuy install it. They advised me I needed a new power supply unit to support the new graphics card. I agreed it was necessary to run my new Cinema 4d app. They installed itand I have not had a single crash since that. Very happy guy today
I would recommend this to a friend
Pros mentioned:
Power supply capacity
Rated 5 out of 5 stars
Absolute beast
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Posted . Owned for 8 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
After adding all my peripherals and other drives my original PSU was having a hard time. Picked this up and installed it super easily and ive had 0 issues with it so far and even upgraded my gpu and still haven't noticed any issues
I would recommend this to a friend
Pros mentioned:
Power supply capacity
Rated 5 out of 5 stars
Power Flex!!
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This thing is a beast. It is crucial for my pc, which is fully decked out with Corsair. I have 10 Corsair fans, 128 GB of Corsair RAM, and a Corsair AIO cooler. Other Corsair peripherals that I have are a Corsair XL Extended mouse pad, a Corsair wireless charging pad, which is used to charge my Corsair mouse! This PSU is a must-have!! Try it out for yourself! Corsair never disappoints!
I would recommend this to a friend
Pros mentioned:
Cable management, Overall performance
Rated 5 out of 5 stars
Very nice PSU.
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This reviewer received promo considerations or sweepstakes entry for writing a review.
Very nice PSU. Like the nicely finished cables with separators. Had a little "new" smell with first use under power, but that went away quickly.
All in all, I can recommend this PSU.
I would recommend this to a friend
Rated 5 out of 5 stars
Rock-Solid Quality
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Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
I’ve purchased multiple variations of this product over time, and the experience has been consistently excellent. Build quality is solid, performance is reliable, and it does exactly what it’s supposed to do without surprises. Installation is straightforward, fit and finish are clean, and it performs well under sustained use.
What ultimately keeps me buying this is consistency. Across different models and configurations, the quality has remained dependable, which matters more than flashy features. When I need something I can trust, this is the brand I reach for, and it hasn’t let me down yet.
I wouldn’t hesitate to purchase this again, and I routinely recommend it to others who want reliable hardware without headaches.
I would recommend this to a friend
Pros mentioned:
Cable management
Rated 5 out of 5 stars
Great PSU
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Got this unit for a new PC build. I have used Corsair products before and never had any issues. This new power supply is great as it is totally modular and you can use only the cables that you need leading to a cleaner look and easier cable management. Would definitely buy again.
I would recommend this to a friend
Pros mentioned:
Cable management, Overall performance
Rated 5 out of 5 stars
Quality 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.
Running a RTX 3060 video card and this run its beautifuly. Also really like the clean look of the wiring. Makes it easy to route and manage.
I would recommend this to a friend
Pros mentioned:
Cable management, Overall performance
Rated 5 out of 5 stars
Works great. Makes setup much easier.
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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. No issues keeping my custom pc running and the modular cables made putting my pc together much easier. No complaints so far.
I would recommend this to a friend
Pros mentioned:
Noise level, Overall performance
Rated 5 out of 5 stars
Good quiet clean PSU
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Posted . Owned for 3 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Extremely quiet, runs good with no visible issues. The fan knob is a little pointless as 99.9% of the time you will just leave it on automatic and it will only turn on when it's hot.
I would recommend this to a friend
Pros mentioned:
Installation ease, Overall performance
Rated 5 out of 5 stars
Reliable
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
it’s been running pretty well so far :) and was easy to install
I would recommend this to a friend
Pros mentioned:
Cable management
Rated 5 out of 5 stars
Very nice
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Easy to setup. Nice modular PSU & nicely labled cables. Wish there was a manual to explain what is what and where is for why.
I would recommend this to a friend
Pros mentioned:
Cable management
Rated 5 out of 5 stars
Good PSU
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
My aging 1000W PSU was unstable with the 5070.
Using this PSU, I didn't need to use adapters for the 12V-2X6 power connector. My computer is now perfectly stable. Works well. I've been trusting Corsair supplies for multiple builds for over a decade.
Glad to upgrade to a modular power supply, too. Cleans up the case and improves airflow.
Only downside is that the cables are not wrapped, but at this price point it wasn't expected.
I would recommend this to a friend
Pros mentioned:
Cable management
Rated 5 out of 5 stars
Reliable 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.
The included cables are a cleaner design than older versions. The adjustable fan option is fine if you're worried about wear on the bearings with starting and stopping. Well tested and reviewed unit.
I would recommend this to a friend
Pros mentioned:
Noise level, Overall performance
Rated 5 out of 5 stars
Power supply
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Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great value power supply. Has been working very well for me. No coil whine or anything.
I would recommend this to a friend
Pros mentioned:
Cable management, Noise level
Rated 5 out of 5 stars
As usual, a quality psu from corsair
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Posted . Owned for 3 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
zero fan mode is awesome. Has all the power cables I could ever need and then some. Nice to see they finally left the rubber coated wires in the past and started offering some cable combs as well.
I would recommend this to a friend
Rated 5 out of 5 stars
Works great
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Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Love modular PSUs for the simple fact you only use the plugs you need and not have extra all over the place, but also leaves room for upgrading, this one will keep me going for a while.
I would recommend this to a friend
Pros mentioned:
Noise level, Power supply capacity
Rated 5 out of 5 stars
Works perfect, even under heavy load
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Posted . Owned for 3 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Overclocking a modern high end build has posed no issues for this PSU, and it runs very efficiently and silently.
I would recommend this to a friend
Pros mentioned:
Power supply capacity
Rated 5 out of 5 stars
Works as expected, easy to use
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Posted .
This reviewer received promo considerations or sweepstakes entry for writing a review.
Plenty of power for all but the highest end graphics cards. Good modularity for easy installation