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Has a great reputation, no issues with PSU. Cannot hear it running at all. Came as a deal with 3x free,powerful (120mm) fans same mfg.

Excellent cable flexibility and solid connections.

It came with all the needed cables and with it being modular made the build go really easy

- High Efficiency - Quiet Operation

Bought this power supply for my first build, got it at a great price, couldn't have asked for a better power supply!!! Love that it's fully modular, 80 plus gold, tax 3.0 compatible, and pCIe 5.0 ready!!!!

- Build quality is on par with Corsairs other products. I still have some that are nearing a decade old, as crazy as that is. (Not with the RM850x, though. See Con #1.) - Zero-RPM fan mode is great, and a good offset for the fluid dynamic bearing fan, which Id guess isnt a ML-line quality or anything, and they also employ specially calculated fan curves (like I do in my motherboards BIOS and in EVGA Precision X1) I barely felt the airflow during my stress test, and it stayed under 50C at 50% load. - The fan curve for the RM850X is: 0RPM for 0% to 40% system load, 425RPM and 4dBA for 50% to 80% load; 680RPM and 18.2dBa@90% load; 900RPM and 25.1dBa@100% load (for comparison, a human whisper is 25dBa, or decibels-per-ampere). - Modular PSUs make it nice to be able to exclude cables I dont need for less clutter! - The purported efficiency profile is best for a 50% load, at 91.1%, and 100% load is 88.12% efficiency, per the spec sheet. I dont have a load-tester, but I do have an ATX breakout board modified with a larger-current fuse, and Im very tempted to pull it back out of my rig and test this efficiency rating and noise efficiency of the caps with a 750W audio amplifier and matched Skar Audio subwoofers. Thats something I can see on the oscilloscope, too. - The ports and connectors are a smaller interface compared to the older model. (I welcome it, though it does start the trend of a whole box of old PSU cables becoming obsolete.) - Ive recorded vocals with my AKG C214 condenser mic into Audacity via USB audio interfaces and (a Behringer mixer and Motu M4). Listening back on my AKG Q701s and Presonus studio monitors, it sounds absolutely clean on the digital storage and reproduction side. No coil whine so far with this one. - The overall size is slightly smaller and shorter, so theres now a rodent-sized crawl-space under my case where a bundle of wires used to be stuffed. Yay for airflow. But that header location for the power cables is not the best implementation, IMO. - The opening MSRP for this product is competitive and provides value, considering economic inflation. If there is any coil whine in the next ten years, then call Corsair! - That 10-year warranty alone is worth the MSRP. Consumers pay considerably more for such extended warranties at big-box stores. - ATX 3.0 and PCIe5, baybayyyy! Ive been holding off on a GPU upgrade because of Nvidias shenanigans, but Im going to aim for a next-gen contender for GDDR7. Like if EVGA and Intel ARC were to rescue one another. - Transparency: I have to slide this one in, but this is a pretty nice product overall, and Corsair published a reviewers guide linked in the press release for this product that seems as close to a datasheet as we could expect. I get the vibe that they sincerely try to engineer superior products for us weebs and geeks, and it shows in their customer participation and image. There are a few brands like that across tech. Im glad we still have it, and that everything hasnt turned into whatever comes out of Shenzhen.

- Dedicated 12VHPWR included with yellow tip to make it easy to fully seat -Cabling made it easy to install

The cables that the PSU is packaged with are great, individually insulated and super flexible. Excellent for micro cases where cable management is limited.

Price to performance Modular Looks

Decent amount of cable options 80+ gold Smallish size Affordable

The smaller Type 5 connections are nice, and the end-to-end Type 5 GPU power cable was awesome for a new build, since my card is also Type 5. No need to use an adapter.

- size - cables - zero rpm fan - always quiet

There is nothing to not like about this power supply. It has more than enough power for me, and it has a variable speed fan that i can adjust. I originally started with the "shift" version of this power supply. I soon realized that, due to the side connector design, it would not work in my case. So New Egg swapped it for this one. Works great!!!

- Fully modular, plug in only what you need without the mess. - Comes with the new plug for more expensive GPUs like the RTX 4090. - Amazing price for an 80 Gold Plus PSU. - Silent fan. - Sleek looking cords. - Uses Japanese caps instead of the inferior Chinese ones!!!

It's compacted and powerful for a small power source.

Came with plenty of cables. Fit perfectly in my case.