Corsair’s RM850e (2025) sits in the RMe range as a quieter, fully modular ATX PSU aimed at modern gaming and creator PCs, competing with other 850W ATX 3.x units from the likes of Seasonic and be quiet!. This listing is Used, Like New, which typically means a customer return or opened box with minimal to no cosmetic wear, and it should be fully tested and complete, though it is still worth checking the included cables and warranty terms.

Who is this PSU best suited to?

It makes sense for builds using current high end GPUs, thanks to ATX 3.1 compliance and the included 12V 2x6 cable, the updated connector standard used for PCIe 5.1 graphics cards. Fully modular cabling helps keep airflow tidy in smaller cases, and the low noise focus is useful if your PC sits on the desk rather than under it.

• 850W capacity, suitable for many performance CPU and GPU combinations without pushing the PSU hard.
• ATX 3.1 and PCIe 5.1 support, better matched to modern GPU power spikes and cabling.
• Fully modular, fit only the leads you need for cleaner builds and simpler upgrades.