CORSAIR RM1200e (2023) Fully Modular Low-Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Platinum Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black

The Corsair RM850e (2023) Fully Modular Low-Noise Power Supply is an outstanding choice for anyone looking to build or upgrade a high-performance PC. With its 850-watt capacity, this power supply perfectly balances power efficiency and performance, ensuring that even the most demanding systems run smoothly. The fully modular design allows for easy cable management, helping to create a clean and organized build while optimizing airflow within the case. One of the standout features of the RM850e is its low-noise operation. Equipped with high-quality components, including a specially designed fan that only spins when needed, this power supply ensures minimal noise, making it great for quiet computing environments. Additionally, its 80 PLUS Gold certification guarantees impressive efficiency, reducing energy consumption and keeping electricity bills in check. Overall, the Corsair RM850e is a reliable, efficient, and quiet power supply that is well-suited for gamers and professionals alike, deserving of high praise for its performance and build quality. I’ve been using this in my rig, and it powers everything consistently and quickly. After a few years of use, I haven’t encountered any issues at all.

Solid PSU. It has worked great for the past year and a half. I have experienced no Power Supply issues in my build. It should fit any ATX case. The modular function makes it simple to use. Use the cables you need, and don’t use the cables you don’t need.

Amazing modular power supply! it has ran like a champ and is very easy to work with.

This Corsair power supply has got to be the best PSU I have ever worked with In terms of Bench Testing a PC. The Modular Design lets you only plug in what is needed to make the system work, which allows you to avoid unnecessary clutter of unused cables unlike traditional PSU's. if i apply the concept of this power supply to building a PC, the Cable Management will be much easier as you will have extra space to store excess cables and can retain the unused cables in your box outside of the case until needed. During bench testing of my new system which contains the following parts: - ASUS ROG Crosshair X670E Hero - AMD 7900X 170 W - Corsair Dominator Titanium DDR5 - Gigabyte Nvidia RTX 3060 12G - Crucial T700 2Tb Gen 5 PCIe M.2 - Micron 500 Gb Gen 4 PCIe M.2 - RM1000e PSU 1000 W I was able to boot, and bench test (Cinnebench 2024) my system and this Unit didn't spin the cooling fan up once for the first 5 minutes of the test. Once the fan kicked on it was so unbelievably quiet. My current system has an EVGA 650W power supply in it and that thing sounds like a leaf blower sometimes. The Corsair PSU functions in a "Zero RPM" state only spinning up when needed and the fan is so quiet you cant really tell when its on unless you are looking at it. I plan on Building y system once my case arrives, and will update my review about installation and cable management, and include a few pictures to boot. I Ordered Corsair Pro Sleeved cables for my build so I will not be using the stock cables in my final build, however I did use them for bench testing and I can say that the stock cables are nice, flat ribbon cables with a durable exterior coating. They are flexible yet sturdy, and can be easily Cable Managed with zip-ties and Velcro straps. Overall first impressions i would Definitely recommend this to people who need a great power supply with intuitive modular cable management for cases like the Corsair 4000.

I ordered the CORSAIR RM750e (2025) expecting the Gold efficiency model, but the unit that arrived is clearly labeled Platinum on the box. That was a pleasant surprise since Platinum certification means higher efficiency, cooler operation, and less wasted power compared to Gold. The build quality is solid, the fully modular design makes cable management easy, and it runs quietly even under load. At 750 watts it’s more than enough for a mid‑to‑high‑end build, and with ATX 3.1 and PCIe 5.1 compliance it’s future‑ready. Overall, I ended up with a better unit than advertised, and I’m very satisfied with the upgrade.

I generally don't leave a review when I buy a product because doing so prematurely wouldn't be objective. I've had this power supply running for 18 months, working 12 to 16 hours a day. I do video editing, up to 4K quality, in programs like Adobe Premiere and DaVinci Resolve, as well as artificial intelligence, After Effects, and photo retouching. I haven't had any problems. There have been power outages, and I've used it almost to its limit without any issues. In the future, when I upgrade my equipment, I'll get a higher-capacity power supply from the same brand. I recommend it.

I picked up the Corsair RM1000e (2023) for my build, and it’s been rock‑solid so far. The fully modular design makes cable management a breeze, and I really appreciate that it’s ATX 3.1 and PCIe 5.1 compliant, so it’s future‑proof for next‑gen GPUs. It runs quietly even under heavy load, and the 80+ Gold efficiency rating gives me peace of mind about power stability. The only downside is that it’s a bit overkill if you don’t need 1000W, but for high‑end rigs it feels like a reliable investment.

Una belleza de fuente de poder, la compré para mi nuevo build de Ryzen 9900X3D y RTX 5070 TI . Super recomendable para evitar tener que utilizar el cable Y que viene con la tarjeta de video. Si ya invertiste en una GPU cara, mejor cuídala! La fuente viene con su entrada y cable de 12v 2x6 especial para la GPU.

Qualidade de construção e operação da fonte é excelente. Apenas um adendo: não acompanha cabo de alimentação. Caso seja seu primeiro setup, será necessário adquirir um cabo à parte.

Recebi o produto rápido mas demorei para saber se estava funcionando, agora que chegaram as ferramentas aí está a Conclusão: Com base nas leituras, a fonte de alimentação apresenta problemas na linha de -12V (mostrando "L.L") e no sinal Power Good (PG) (70ms, que é muito baixo). Embora a maioria das outras tensões (+12V1, +12V2, +5V, 5VSB, +3.3V) pareçam estar dentro das faixas aceitáveis, os problemas com o -12V e o sinal PG indicam que esta fonte de alimentação não está funcionando corretamente. Quero a substituição ou o reembolso!

Una opción recomendable para un sistema de consumo medio, a buen precio, con la opción de modularidad ofreciendo la capacidad de ajustarla muy bien a los requerimientos de tu sistema. El paquete como tal incluye cables de muy buena calidad e incluso tiras para poder ajustar los cables y mantener una configuración limpia dentro de la torre. La fuente como tal es silenciosa, y a funcionamiento pleno permanece eficiente. Llega bien, todo en su empaque general.

I've heard some people complain about the noise emitted from the RMxxxe. They usually recommend going with their older, RMx model instead. However, I did not notice any noise coming from the power supply, and my computer is right next to me on my desk. Personally, I think you can't go wrong with either choice. I do think that it could be helpful to look at alternatives, though, as corsair is a bit notorious for overcharging. Additionally, only the motherboard cable provided was braided. Everything else was standard, which may be a deal breaker for some people.