Customer Ratings & Reviews
- Model:
- CP-9020270-NA
- SKU:
- 6587623
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
Customers are saying
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.
- Pros mentioned:Overall performance
Review
||Posted . Owned for 3 weeks when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Was perfect for what I needed and came with everything in the box. No issues so far
I would recommend this to a friend Great for the price
||Posted . Owned for 1 month when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Haven’t had any problems with it so far only reason it’s not a 5 star is because it’s not easiest setup if ur new to building
I would recommend this to a friend- Pros mentioned:Power supply capacity
Power good supply
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Good power supply hold many power can play fortnite
I would recommend this to a friend - Pros mentioned:Overall performance
Perfect
||Posted . Owned for 1 month when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Great power supply works perfectly Best Buy had it in stock ready to pick up
I would recommend this to a friend Corsair 850x
||Posted . Owned for 2 weeks when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Really good psu, comes with every connector your gonna need, including 3 8 pin connectors for a 9070 xt. Definitely not light, but worth it
I would recommend this to a friend- Pros mentioned:Overall performance
Goodbuy
||Posted . Owned for 1 week when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Exactly what it is, works as described and doesn’t have issues
I would recommend this to a friend - Pros mentioned:Overall performance
Great
||Posted . Owned for 3 weeks when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Works great and the setup was very simple. Recommend.
I would recommend this to a friend Good price to performance
||Posted . Owned for 1 month when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Good build quality and no issues so far. Nice amount of modular cables. The “x” models are made with Japanese capacitors if that matters to you.
I would recommend this to a friendComputer
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Amazing service i love bestbuy. Love how they started catering to pc gamers
I would recommend this to a friendCorsair 850 PSU
||Posted . Owned for 3 weeks when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Good modular power supply with big 140mm fan and best part is the manual fan speed adjustment !
I would recommend this to a friendNot at shown price, Not Compatible 2014 MB
||Posted . Owned for 2 weeks when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.This is ATX 3.1 complient which makes it incompatable with Asus Strix X99 Mother Boards. This is due to the removearal of the negative 12 volt connection (pin 14) which is now set to a modulating voltage (read somewhere online trying to figure out why I couldnt get my computer to work)) I got this psu as it was listed for $76.99 on the shelf and I thought that was to good to be true. I even had a employee come over and check and they saisd that was in deed the correct price. So I got this psu and went to check out. It is in fact NOT $76.99 BUT $149.99 Pic for reference. So I am not a fan of Best buys switch and bait on prices. If I didn't need my PC up and working I would wait for a replacement psu from amazon. Icing on the cake this PSU is not compatible to my PC as ATX 3.1 is different than ATX 3.0. So if you have older hardware than you will need to avoid this as the new standard is not compatible. ATX 3.0 is the last compatible standard for older hardware.
No, I would not recommend this to a friendBrand response from Corsair
Posted .Hello,
Please complain directly to Best Buy regarding price as that's irrelevant to the product itself. As far as compatibility, please confirm your components are compatible before purchasing to avoid issues.
-Art
- Pros mentioned:Cable management, Noise level, Overall performance
Reliable
||Posted . Owned for 3 months when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.The Corsair RM850x is an excellent PSU that provides a top-tier balance of performance, features, and value. Its silent operation and fully modular cables make for a clean and quiet system, while its robust power delivery and high-quality components ensure long-term reliability. Just be mindful of the specific model version you purchase if ATX 3.1 and PCIe 5.1 support are critical for your build.
I would recommend this to a friend - Pros mentioned:Cable management, Installation ease, Noise level
Great PSU
||Posted . Owned for 5 months when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Great performance, not too noisy, 0 trouble. The quality of the cables is great, fully modular so its easy to install, I used to power a R7 7700x with a 7900xt, tons of fans and RGB and this psu has more than enough power. Highly recommend.
I would recommend this to a friend - Pros mentioned:Cable management, Noise level, Power supply capacity
Rock-Solid, Silent, and Future-Proof Power Supply
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.The Corsair RM850x is a powerhouse—literally. I chose this PSU for a high-performance build with a 5060 Ti GPU and Ryzen 7, and it hasn’t missed a beat. Power delivery is rock-solid even under full load, and the 80+ Gold efficiency rating means it runs cool and helps keep the energy bill in check. Fully modular cables make the build process clean and simple—no extra clutter in the case, and airflow is noticeably better because of it. The fan barely ever spins up under normal use, and when it does, it’s virtually silent. It also includes a generous amount of cables for future expansion, including PCIe 5.0 GPU compatibility. This is one of those “buy it once and don’t worry again” components. Whether you’re gaming, editing, or just building for stability, it’s a smart investment.
I would recommend this to a friend - Pros mentioned:Cable management, Noise level, Overall performance
Excellent PSU — quiet, reliable
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.eview: This Corsair RM850x is an outstanding power supply. It runs completely silent most of the time, even under load, and provides very stable voltage. The fully modular design makes cable management easy and clean. Build quality feels premium, and it handles my high-end GPU and CPU with no issues at all. Definitely worth the price for anyone building a quality PC.
I would recommend this to a friend - Pros mentioned:Cable management, Noise level, Overall performance
Good PSU
||Posted . Owned for 1 week when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.The CORSAIR RM850x is a rock-solid power supply! It’s quiet, reliable, and provides plenty of power for my setup with room to spare. Installation was simple, and the fully modular cables make cable management a breeze. With excellent efficiency and build quality, this PSU is a great choice for anyone looking for a dependable upgrade.
I would recommend this to a friend - Pros mentioned:Cable management, Installation ease, Power supply capacity
Good purchase.
||Posted . Owned for 2 weeks when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Easy to Install, comes with more than enough cables; low powet mode knob highly useful.
I would recommend this to a friend - Pros mentioned:Cable management, Noise level, Power supply capacity
Yeah, supply my power
||Posted . Owned for 1 month when reviewed.This reviewer received promo considerations or sweepstakes entry for writing a review.Not sure what else I can add that hasn't been said 10000x about Corsair RMx PSUs. Silent operation. Nice cables. Easy to plug in. Powers all my stuff. Native 12VHPWR. Best bang for buck re: PSUs for a long time now.
I would recommend this to a friend - Pros mentioned:Noise level, Overall performance
Excellent PSU
Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Exactly what I needed. Super quiet and super reliable.
I would recommend this to a friend - Pros mentioned:Cable management, Noise level
amazing power supply
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Very nice power supply. good quality materials. the supplied power cables feel very nice and stiff while still being flexible to route in the case. the psu is very quiet during idle and during load, and it also has an option to manually and physically control the fan speed. 10/10 would recommend
I would recommend this to a friend
