Customer Ratings & Reviews

I upgraded to this from a 650W PSU as I needed a bit more power for my 5070 Ti. I was worried it might be noisy, but I haven't heard a peep out of it since installing it. I'm not sure the fan has even come on once. It's pretty compact so there should be no issue fitting it in most builds. The cables are a nice change of pace. They're not quite braided, but they're not the usual rubber cables you see with other units. It's also nice they include a comb to keep them neat. Happy with my purchase!

Great power unit. Modular system makes it clean and the 12v high power cable plugs right into all of the modern GPUs. Fan is quiet!

Excellent power supply! The CORSAIR RM850e delivers stable, efficient performance with whisper-quiet operation. Fully modular design makes cable management a breeze, and the build quality feels premium. Perfect for high-end builds, highly recommended.

Love the color, it’s quite and the cables are good plus it hasn’t exploded yet so it’s 100% better then a gigabyte supply

Works as intended, very quiet. Haven't had any issues yet. The modularity is nice.

The CORSAIR RM850e PSU is a fantastic choice for any high-end build, especially those focusing on white aesthetics. Its 80 PLUS Gold rating ensures superb efficiency, while the fully modular design keeps cable management clean. Crucially, it supports ATX 3.1 and PCIe 5.1, providing essential future-proofing for next-gen GPUs. The low-noise fan makes it virtually silent under normal load.

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.

fully modular easy to set up and super quiet. works perfectly for any build.

great power supply that was easy to install, had no issues at all :)

This has been working greatly in my PC. Definitely a lot more quiet than my previous part. I'm glad I replaced it!

I had to purchase this to put in to my pc to run the 5070ti in my pc and it worked wonders. High quality cords and easy to use plug ins.

My 2nd RM series PSU in a month, on 2 different PC's. This was a preemptive purchase replacing a CX with a C+ on the SPL rating. This one is in the B range. Very quiet. The cables are amazing. Only con is that to have 3 PCIE connections, you have to use the dreaded 12V connection to split out into 2 standard PCIE connections, plus 1 of the type 4 units.

Great power supply for my latest pc build. Its nice and quiet. The modular connections are amazing, only using the ones I need. Not much not to like about this quality product.

Put this power supply in my new pc. It runs quiet and efficiently

Works amazing just as intended, made my pc run a lot better and allowed me to put a better gpu in since my old psu didn’t have enough watts

it being modular makes a big difference, the wires are nice and it comes with one of the new cables that you can plug directly into your GPU instead of plugging three cables in into an adapter

modular feature works amazing and super quit and will power my 5070 no problem.

Amazing power supply, easy to setup and is low noise

I purchased this power supply as part of a PC build to get on Windows 11. It's been rock solid and quiet. Also, the fact that it came with so many cabling options, specifically for video cards was very helpful. While it doesn't have a lifetime warranty, a 7 year warranty seems sufficient for aging this computer to the point where I would be looking a doing another refresh.

Not too much to say about this psu, especially anything bad. Very clean with an all white build, sturdy perfectly matching white cables, and should be able to power the setup it’s meant to fit years to come.