Customer Ratings & Reviews

The Corsair RM850x is an outstanding power supply. It’s extremely reliable, runs quietly even under load, and delivers stable power with no issues. The fully modular design made cable management easy, and build quality feels top-tier. It’s efficient, dependable, and perfect for high-end gaming or workstation builds. Corsair really nailed it with this PSU—highly recommended.

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.

This power supply is quiet, and handles all my components without issues. Dedicated 12vhighpower or 12v 2x6 connector. Powers a 4090/9800X3D, many rgb fans and a 420mm aio without a problems. A bit on the expensive side for 850watts, but you get what you pay for.

Bought this as i was upgrading my graphics card and is more than what i need. Being fully modular helped tremendously with cable management and never hear the fan spinning.

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.

Easy to Install, comes with more than enough cables; low powet mode knob highly useful.

Exactly what I needed. Super quiet and super reliable.

easy install, plenty of extra cables fast to set up. have one like this in all of my machines

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.

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.

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.

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.

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

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

Super easy to install, the fully modular option makes everything cleaner and more comfortable.

Not much to say, bought it cause my old PSU died right before closing time. Raced over, picked it up, and slapped it in! Works like a charm. Has a interesting manual fan speed knob on it so you can crank it up or just leave it off for auto speed.

I recently upgraded to the Corsair RMx Series RM850x Cybenetics Gold Fully Modular ATX Power Supply, and it has been an excellent choice for my system. One of the key reasons for upgrading was to support my new Nvidia GPU, and this PSU delivers flawlessly, especially with the built-in 12VHPWR connector, eliminating the need for adapters. The adjustable fan in the back is a great feature, allowing for better cooling control and quieter operation under different loads. The fully modular design made installation and cable management a breeze, keeping my setup clean and efficient.

Easy install, great so far no complaints. I’m a big fan of Corsair and have always had a good history with their products

Graeat PSU with out all the unnecessary wires. Gives you more options in building your Rig. No issues with power so far.