CORSAIR RM1000e (2025) ATX 3.1 PCIe 5.1 Ready 1000W Power Supply – Black

I used the PSU for my side server that I am constructing. I got it and was a bit jelly because of the wires that were shipped with it. The look of it was good, no bells and whistles, but still. On my main PC, I have a 1200W Asus Thor. The 1st Gen. I was tempted to switch that out with this product. In the end, I set up my server. Plenty of power for my Intel Core i9-10980XE matched with my Nvidia 3080. It is very quiet as well. For what I paid for it, I recommend it. No problems installing it. I mean, it's only 4 screws. Cable management was simple: use what you need. It even comes with zip ties. My Asus PSU never did.

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.

Bought this for my first PC build and it’s a great power supply for the money. It’s powerful and quiet. Cable management is simplified.

I'd been using Corsair products for a long time and it does not disappoint. I'd only used it for a short while but I expect it to last for a long time.

I enjoyed this so much I bought a second to build another

Been using Corsair for my PSU needs for years. None have let me down and this one is looking to continue that trend. Absolutely stable power delivery. Cables are high quality. Powering my 9800x3d and 5080 setup flawlessly since October 2025 now. Absolutely zero noise either from internals or the fan. Came with all cables I could possibly need. Cable length and flexibility are fantastic making them easy to manage.

The add creates confusion in showing a newer model. A deep dive into this indicates that both models are identical, the only difference being in the packaging related designation.

After over a year of owning it, still working perfectly powering up my rtx 4090 based gaming PC. I have had a few power supplies die right around the one year mark, but thankfully Corsair is a cut above most.

Most people don't realize they need a good Power supply when they're building their PC, and it's the part that get the bottom of the budget sheet crushing a 60$ there... This one has a name, it's 1000w, ATX 3.0 ready... It is worth it to invest in a very good PSU now, so you can transfer it through multiple PCs in the future, making the right investment now even save you from having to list a PSU in the budget sheet of your next 3-4 future builds. Isn't this even better?

Atendeu todas as espectativas. O que aconteceu de ruim foi que entrou em promoção no dia seguinte, fiz uma nova compra e não consegui cancelar a do dia anterior, mesmo com menos de 12 horas de diferença. As duas entregas vieram e rejeitei a que estava fora de promoção, para que eu pudesse seguir somente com a de valor promocional. No geral, essa fonte é uma nave, e desde então, não tive mais problemas com o PC reiniciando.

Esta bien, trae calidad y buenos componentes ya van 3 meses de prueba y ha funcionado perfecto

Aunque no fue el modelo exacto que compré , ya que pedi uno de 1200 whatts y me mandaron este de 1000 whatts..., la fuente en sí es muy buena y, sobre todo, silenciosa. Llevo más de un año con ella, cero problemas y sin rastro de coil whine. Corsair, en fuentes de poder, nunca decepciona, y la 1000E es un PSU excelente. Lo único malo es que no incluye conectores nativos para las tarjetas gráficas más recientes, por lo que tendrás que usar adaptador, que afortunadamente trae incluido, aunque las graficas nuevas tambien los trae, pero bueno. Si buscas calidad, fiabilidad y silencio, esto es una gran opción, especialmente porque usa capacitadores japoneses!

Pros and Cons as well as the overall rating at the bottom This PSU delivers stable, efficient power with low noise output, making it a strong choice for systems running high‐end GPUs like the RTX 4080, 4090, and upcoming 5000‐series cards. Despite being marketed as an 80+ Gold unit, real‐world testing shows efficiency levels that often approach Platinum territory, which is impressive for its price class. The PSU's compact size makes installation easier in mid‐tower and full‐tower cases, and the fully modular cable system helps keep builds clean. The included flat ribbon cables are long enough for larger cases, though they can feel stiff during initial routing. Still, once installed, they contribute to a tidy, airflow‐friendly layout. Noise performance is one of the RM1000e's standout strengths. The 120 mm rifle‐bearing fan remains off during light workloads thanks to Zero RPM mode, keeping the system silent during browsing, media playback, and light gaming. Under heavier loads, noise levels stay controlled and rarely become distracting. Electrical performance is solid, with stable voltage regulation and low ripple across all rails. Thermal behavior is also well‐managed, even during extended stress tests. The native 12V‐2×6 connector ensures full compatibility with modern GPUs without adapters, which is a major plus for long‐term reliability. The RM1000e a great value when discounted, but less compelling when priced close to its RMx sibling. Overall, the RM1000e (2025) is a quiet, efficient, modern PSU that fits well in high‐end builds and offers excellent real‐world performance for the money. Pros .Fully modular design with clean cable management .Very quiet operation with Zero RPM mode .ATX 3.1 + native 12V‐2×6 connector for modern GPUs .Compact size fits easily in most cases .Efficiency often near Platinum levels Cons .Flat cables can be stiff .RM1000x offers slightly better components for a small price difference .Slightly weaker performance than the RM1000x series Overall rating A+