Customer Ratings & Reviews

Great power supply works perfectly Best Buy had it in stock ready to pick up

Exactly what it is, works as described and doesn’t have issues

Works great and the setup was very simple. Recommend.

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.

Amazing service i love bestbuy. Love how they started catering to pc gamers

Good modular power supply with big 140mm fan and best part is the manual fan speed adjustment !

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.

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.

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.

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.

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.

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.

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.

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

Been great so far, very easy to set up with high quality and organized cabling. My favorite part is that it comes in eco-friendly packaging with no plastic! If anything thats just nice when throwing it away because mountains of hard plastic are a pain in the booty with other products.

Easy to install and the cables have a nice look. Wish it had a second PCIE cable though…

Exactly what I needed. Super quiet and super reliable.

I was in need of a new PSU, so I chose the RM850x because I read what was in it as well as the overall ratings it had. The PSU performs beautifully and exceeded my expectations. My system looks much cleaner now too. The previous faulty PSU had multi colored cables that stuck out like a soar thumb, now the cables look significantly nice in my system and they blend well. Also came with a 12vhp cable and port, not that I am using it since my GPU doesn't require it, but it's nice to know that I have that option if I upgrade to something that needs it in the future.

works great. its been quiet, no hicups on power delivery, no issues at all. there are cheaper psu out there, but this one is highly rated and should last you for years provided you dont need more power down the road.

I bought this for my first build. 9800x3D, 9070XT and it is working just fine. No issues so far after a few weeks. Runs silent and keeps giving power