CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

I bought this Corsair RM1000x ATX 3.1 (2024) PSU to replace a faulty ASRock PSU. As one other review mentioned, the Cybenetics rating on the box for power efficiency has been recently updated from Gold to Platinum, which will help keep long term energy costs down for people who live in areas with expensive electricity.When unboxed, the power supply feels and looks like a premium product, and indeed it is. The modular cables in the box all come with individually sleeved wires, and the 12V 2x6 connector and ATX 24 pin connectors come with clamshell style cable combs preinstalled, which seems to be a newer development with this unit. I looked at multiple tech site reviews of this power supply and the only one with cable combs I found was the Kit Guru review, and those were manually installable traditional style combs.The cables did have a bit of a petrochemical smell to them, but it was far better than the ASRock unit I replaced. The cables on the RM1000x are also longer and more flexible than on the ASRock unit, making routing in my mid-tower case easier, specifically for the CPU (length) and ATX 24 pin (flexibility).The power supply performs exceptionally well, making absolutely no coil whine noise at any load, and works completely silently at loads below 500 watts. The fan control knob on the back of the unit comes out of the box set to 0 RPM low noise mode, leaving the fan off until the aforementioned 500 watt limit is exceeded. If you don't care about 0 RPM low noise mode, you can adjust the knob clockwise until it clicks, at which point you're manually controlling the fan, allowing you to set a constant fan speed anywhere in the fans RPM range.One thing to note is that the 12V 2x6 connector that comes in the box only has 2 of the four sense pins, but this is totally fine, as it powers my RTX 5080 without issue, so don't be concerned that two sense wires are "missing".I was extremely lucky to get this unit at a cheaper price only a day before it raised to its current price, but even around the $200 mark, this power supply is worth the price.Overall I give this power supply a 9/10, and only because I don't like that the fan is gray instead of black, which honestly is likely a complete non-issue for most people.

Pros:- Only plug in the cables you actually need - simplified cable management- Quiet fan that only kicks on under load- Straightforward install, great for hobbyist-level buildersCons:- I didn’t find it soonerFull Review:I brilliantly managed to short out the power supply on my PC (PSA: Don't plug a USB-C cable into a USB-A port if you don't want to risk taking out your power supply...), and I bought this Corsair RM1000x in a pinch because it would arrive the quickest. I’m more of an inquisitive hobbyist than a tech expert so had assumed a power supply is just a power supply, but this one had a few features I lucked out on.Super clean and minimal cabling - no medusa-style tangle of wires coming out of the box, just plug in what you need. It took care of the rats nest I had previously by not having to hide the unnecessary cables inside the case. As for the cables I did need, I have an ATX mid-tower case and cable lengths were perfect - not too tight or too slack.The fan stays off during low-demand tasks, then spins up when I’m processing video or doing something more power intensive. It’s quiet when it does turn on, and most of the time it’s completely silent.If you’ve ever blown a power supply and need a replacement you won’t regret, this is it. Honestly, I wish I had this one from the start — it’s one of those parts that just works and makes your build cleaner and quieter.

I used this Corsair on a makeshift Plex Server build which is full of repurposed older parts, there was previously a 15 year old power supply in this case which needed to be upgraded so I picked 750w model for Corsair's reputation and it's power efficiency.The PSU is very silent, dead quiet because the fans don't run when it's at low usage. This Plex server build is only pulling approximately 80W under normal usage with the Corsair. On the ancient 15 year old power supply it was pulling approximately 120W under the same usage, so this Corsair power supply is giving me a 40W savings due to it's increased efficiency which is awesome.The build quality feels excellent and the cables provided are high quality and flexible making them easy to work with and route within the case. If you want to get fancy you could upgrade the cables to something like Cablemod cables but for my use with this Plex server it is not necessary as this wasn't meant to be a "pretty" build.This is my second Corsair power supply, I also have another model in my main system which has been running for a couple years without any issues. Most of Corsair's power supplies are on the high end of the PSU Tier list, google the PSU Tier List if you want to see it's exact rating among all other power supplies.

Great unit! A-tier unit with solid performance and good reviews. High quality. I haven’t seen the fan spin yet (not like I do a lot of high power consuming tasks) but this PSU powered my 9800x3d and 5080 flawlessly.Super quiet. Cables are good! The length is adequate I wish it was more compact for SFF cases. I would go for SF1000 doesn’t come with a native 12-pin connector so I decided to give it a try. Sure enough - too large for my case (Lian Li A3) as I have a real large 5080 that takes almost entire space in it. With an AIO 360 it’s simply not an option. For those of you who attempt to build in A3. So I will most likely go for a good air cooler instead and keep this unit. Love it.

Power supply has been in my computer for quite some time. I have had absolutely no issues. The modular is nice because you can remove all of the cables you aren't planning on using for better air flow. It also makes it easier to install excellent value for the money

Works great! Must use it's wires. Can't use your old ones. Which is obviously something you should do anyway. It's quiet even under load. It's actually a little smaller than my old 750 EGVA, which is nice too.