---
product_id: 679655809
title: "RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black"
brand: "corsair"
price: "AR$876162"
currency: ARS
in_stock: true
reviews_count: 5
url: https://www.desertcart.com.ar/products/679655809-rm850x-fully-modular-low-noise-atx-power-supply-atx-3
store_origin: AR
region: Argentina
---

# 850W high power output Fully modular cabling Cybenetics Gold 91% efficiency RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

**Brand:** corsair
**Price:** AR$876162
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up like a pro — quiet, efficient, and future-proof.

## Quick Answers

- **What is this?** RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black by corsair
- **How much does it cost?** AR$876162 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/679655809-rm850x-fully-modular-low-noise-atx-power-supply-atx-3)

## Best For

- corsair enthusiasts

## Why This Product

- Trusted corsair brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Next-Gen Ready:** ATX 3.1 & PCIe 5.1 compliance ensures seamless compatibility with the latest GPUs and Intel standards.
- • **Power Your Ambition:** 850 watts of clean, reliable power to fuel your high-performance build without compromise.
- • **Tailored Connectivity:** Fully modular design means you only plug in what you need—streamlined, clutter-free, and ultra-flexible.
- • **Built to Last a Decade:** Backed by a 10-year warranty and premium components, this PSU is your long-term power partner.
- • **Whisper-Quiet Operation:** Low-noise 140mm FDB fan and premium Japanese capacitors keep your rig cool and silent under load.

## Overview

The CORSAIR RM850x is a fully modular, 850W ATX 3.1 compliant power supply designed for high-end PC builds. Featuring Cybenetics Gold certification for 91% efficiency, native 12V-2x6 connectors for the latest GPUs, and ultra-flexible embossed cables, it delivers quiet, reliable power with a 140mm low-noise fan and premium Japanese capacitors. Backed by a 10-year warranty, it’s engineered for durability and future-ready performance.

## Description

CORSAIR RMx Series Fully Modular Low-Noise Power Supplies deliver quiet, dependable power with Cybenetics Gold efficiency to your PC. Fully modular, ultra-flexible embossed cables make PC builds easy, as you connect only the cables your system requires. Compliant with the ATX 3.1 power standard from Intel®, RMx PSUs have the connections needed to power today’s demanding PC hardware including a native 12V-2x6 connector. 100% Japanese 105°C-rated electrolytic capacitors deliver fantastic electrical performance, while a 140mm FDB fan provides low noise cooling. Backed by a ten-year warranty, RMx PSUs are the gold standard for many years to come.

Review: For as long as I've been building my own computers - more than twenty-five years now - I've used Corsair power supplies. I don't necessarily think they are better than any other brand, but they've never let me down, despite all my computers generally running 24/7 in dusty, sometimes humid, sometimes 90F environments. I purchased this not because my old Corsair supply failed, but because I was installing a 5070Ti and wanted higher output as a result - the 650W would have barely been suitable. Swapping supplies was dead simple; the old one slotted in place of my old RM650x, and all I needed to do is replace the old power cable from the RX470 with the newer 12V-2x6pin. I have all Cablemod Sleeved cables and debated replacing the the new 12-pin connector with a sleeved variant, but it's so flexible and clean looking I decided the Corsair one was just fine. I've been running for about three months now without any issue. Obviously not much time on a PSU but I doubt I'll have problems. As an aside, this one has a variable fan speed knob. So far as I can tell, if you leave it off it will just run in normal, automatic mode, whereas if you use the knob it will instead always run at a certain speed. I think, I'm not totally clear on it. I just keep the knob off - my system is already very quiet and I don't think I've ever heard the PSU fan turn on even with my old supply, much less this newer one. As my mobo doesn't support PCIe 5.1, I can't comment on that part of the component. I would definitely recommend this RM850x, and would recommend Corsair in general, so far as PSUs are concerned. They seem very solid and well-made, and I've never been disappointed by them in the past.
Review: Excelente producto, por un error en Bios entro en modo proteccion, investigue y resolvi ese error, la fuente funciona bien y de todo lo aprendido me doy cuenta que es un producto premium, la recomiendo.

## Features

- Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
- Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
- ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
- Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection – no adapter necessary.
- Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DJ1JL3MK |
| Are Batteries Included | No |
| Brand | Corsair |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (560) |
| Date First Available | 31 October 2024 |
| Form Factor | ATX |
| Item Weight | 1.77 Kilograms |
| Item model number | CP-9020270-NA |
| Manufacturer | Corsair |
| Product Dimensions | 5.84 x 8.61 x 15.01 cm; 1.77 kg |
| Series | RMx |
| Wattage | 850 watts |

## Product Details

- **Brand:** Corsair
- **Compatible devices:** Monitor
- **Connector type:** ATX
- **Model name:** RMx
- **Output wattage:** 850 Watts

## Images

![RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black - Image 1](https://m.media-amazon.com/images/I/61eKAbgBZRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***C on 12 December 2025*

For as long as I've been building my own computers - more than twenty-five years now - I've used Corsair power supplies. I don't necessarily think they are better than any other brand, but they've never let me down, despite all my computers generally running 24/7 in dusty, sometimes humid, sometimes 90F environments. I purchased this not because my old Corsair supply failed, but because I was installing a 5070Ti and wanted higher output as a result - the 650W would have barely been suitable. Swapping supplies was dead simple; the old one slotted in place of my old RM650x, and all I needed to do is replace the old power cable from the RX470 with the newer 12V-2x6pin. I have all Cablemod Sleeved cables and debated replacing the the new 12-pin connector with a sleeved variant, but it's so flexible and clean looking I decided the Corsair one was just fine. I've been running for about three months now without any issue. Obviously not much time on a PSU but I doubt I'll have problems. As an aside, this one has a variable fan speed knob. So far as I can tell, if you leave it off it will just run in normal, automatic mode, whereas if you use the knob it will instead always run at a certain speed. I think, I'm not totally clear on it. I just keep the knob off - my system is already very quiet and I don't think I've ever heard the PSU fan turn on even with my old supply, much less this newer one. As my mobo doesn't support PCIe 5.1, I can't comment on that part of the component. I would definitely recommend this RM850x, and would recommend Corsair in general, so far as PSUs are concerned. They seem very solid and well-made, and I've never been disappointed by them in the past.

### ⭐⭐⭐⭐⭐ Review
*by C***. on 19 January 2026*

Excelente producto, por un error en Bios entro en modo proteccion, investigue y resolvi ese error, la fuente funciona bien y de todo lo aprendido me doy cuenta que es un producto premium, la recomiendo.

### ⭐⭐⭐⭐⭐ Review
*by T***. on 14 January 2026*

Upgraded from my 650w as I got a 5080 and needed more wattage. Excellent quality from the RMx line, runs quiet and have had zero issues with my previous 650w in the 6 years I had it - which is why I went for the same RMx line for this upgrade. My only quip is that the new cables no longer come with the cleaner looking netted wire wrapping. The wires are now unwrapped but textured to mimic the old net wrapping.

## Frequently Bought Together

- CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black
- Samsung 990 PRO SSD NVMe M.2 PCIe Gen4, M.2 2280 Internal Solid State Hard Drive, Seq. Read Speeds Up to 7,450 MB/s for High End Computing, Gaming, and Heavy Duty Workstations, MZ-V9P2T0B/AM
- AMD Ryzen 7 7800X3D 8-Core, 16-Thread Desktop Processor

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-08*