---
product_id: 679655809
title: "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"
brand: "corsair"
price: "R924"
currency: ZAR
in_stock: false
reviews_count: 5
category: "Corsair"
url: https://www.desertcart.co.za/products/679655809-corsair-rm850x-fully-modular-low-noise-atx-power-supply-atx
store_origin: ZA
region: South Africa
---

# 91% Cybenetics Gold Efficiency 850W Peak Power ATX 3.1 & PCIe 5.1 Ready 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

**Brand:** corsair
**Price:** R924
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Power up your build with quiet confidence and future-ready tech!

## Quick Answers

- **What is this?** 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 by corsair
- **How much does it cost?** R924 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/679655809-corsair-rm850x-fully-modular-low-noise-atx-power-supply-atx)

## 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

- • **Modular Mastery:** Fully modular, ultra-flexible embossed cables let you customize your setup with a sleek, clutter-free aesthetic.
- • **Power Your Ambition:** 850 watts of clean, reliable power to fuel your high-performance build without compromise.
- • **Efficiency That Saves:** Cybenetics Gold certification means up to 91% efficiency—cut your energy waste and keep your rig cool and quiet.
- • **Whisper-Quiet Cooling:** 140mm fluid dynamic bearing fan and premium Japanese capacitors deliver silent, long-lasting performance backed by a 10-year warranty.
- • **Future-Proof Connectivity:** Native 12V-2x6 connector and ATX 3.1 compliance ensure seamless support for the latest GPUs and Intel standards.

## Overview

The CORSAIR RM850x is a fully modular, low-noise ATX power supply delivering 850W of stable power with Cybenetics Gold 91% efficiency. It supports the latest ATX 3.1 and PCIe 5.1 standards, featuring a native 12V-2x6 connector for modern GPUs. Equipped with premium Japanese capacitors and a quiet 140mm fan, it ensures reliable, cool operation backed by a decade-long warranty—ideal for professional-grade PC builds.

## 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: Good - Works perfectly fine and have had no trouble with this power supply. The 850 battery is more than enough for my computer, plus some just in case. Has held up for a few months now so worth it in my opinion. Appreciated all the extra cables that came with it too, even though I didn’t need to use them all. Should be good for a longer time.
Review: Vale totalmente la pena por lo que pagas - Silencioso, muy facil de instalar y todo los cables se sienten de excelente calidad, no me ha dado ninguna inventen por el momento

## 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 |
| Brand | Corsair |
| Built-In Media | Item |
| Compatible Devices | Monitor |
| Compatible devices | Monitor |
| Connector Type Used on Cable | ATX |
| Connector type | ATX |
| Cooling Method | Air |
| Customer Reviews | 4.7 out of 5 stars 762 Reviews |
| Form Factor | ATX |
| Form factor | ATX |
| Item Dimensions | 5.8 x 8.6 x 15 centimeters |
| Item Weight | 3.9 Pounds |
| Manufacturer | Corsair |
| Maximum Input Voltage | 264 Volts (AC) |
| Mfr Part Number | CP-9020270-NA |
| Minimum Input Voltage | 100 Volts (AC) |
| Model Name | RMx |
| Model Number | CP-9020270-NA |
| Model name | RMx |
| Number of Fans | 1 |
| Number of Items | 1 |
| Output Wattage | 850 Watts |
| Output wattage | 850 Watts |
| Power Supply Design | Full Modular |
| System Bus Connector Type | ATX |
| UPC | 840006667506 |
| Unit Count | 1 Count |
| Wattage | 850 watts |

## Product Details

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

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61eKAbgBZRL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/71ugnWpH5DL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/81WzZbszsQL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/812LOeRvOUL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/81+Mpo7pVOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by L***L on 31 July 2026*

Works perfectly fine and have had no trouble with this power supply. The 850 battery is more than enough for my computer, plus some just in case. Has held up for a few months now so worth it in my opinion. Appreciated all the extra cables that came with it too, even though I didn’t need to use them all. Should be good for a longer time.

### ⭐⭐⭐⭐⭐ Vale totalmente la pena por lo que pagas
*by M***7 on 24 August 2026*

Silencioso, muy facil de instalar y todo los cables se sienten de excelente calidad, no me ha dado ninguna inventen por el momento

### ⭐⭐⭐⭐⭐ Rock-Solid Powerhouse: Corsair RM850x Delivers Clean, Quiet, and Reliable Power
*by S***V on 17 April 2025*

If you’re building a high-end rig and eyeing a power-hungry GPU like the RTX 5080, the Corsair RM850x has your back. I paired it with my RTX 5080 build and it runs buttery smooth—zero stability issues, zero noise drama. Pros: • Handles RTX 5080 Without Breaking a Sweat: Delivers clean, consistent power under load. • Fully Modular Design: Only use the cables you need—clean, simple, and airflow-friendly. • Whisper Quiet: The fan barely runs, and when it does, it’s silent. • 80+ Gold Certified: Efficient and cool, even during long gaming sessions. • Top-Notch Build Quality: Premium components and a 10-year warranty for peace of mind. Cons: • Cables Are a Bit Stiff: Cable management takes some effort, especially with the 24-pin. • Slightly Pricey: But you’re paying for reliability and long-term performance. In short, the RM850x is a future-proof beast. If you’re throwing in a next-gen GPU like the RTX 5080, this PSU is more than ready to carry the load.

## 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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**Shop now:** [https://www.desertcart.co.za/products/679655809-corsair-rm850x-fully-modular-low-noise-atx-power-supply-atx](https://www.desertcart.co.za/products/679655809-corsair-rm850x-fully-modular-low-noise-atx-power-supply-atx)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-24*