---
product_id: 302229463
title: "CORSAIR RM850x Fully Modular ATX Power Supply - 80 Plus Gold - Low-Noise Fan - Zero RPM - Black"
brand: "corsair"
price: "$280.49"
currency: USD
in_stock: false
reviews_count: 13
url: https://www.desertcart.us/products/302229463-corsair-rm850x-fully-modular-atx-power-supply-80-plus-gold
store_origin: US
region: United States of America
---

# 80 PLUS Gold efficiency 135mm magnetic levitation fan 850W fully modular power CORSAIR RM850x Fully Modular ATX Power Supply - 80 Plus Gold - Low-Noise Fan - Zero RPM - Black

**Brand:** corsair
**Price:** $280.49
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Power your setup with precision and silence — because your build deserves the best.

## Quick Answers

- **What is this?** CORSAIR RM850x Fully Modular ATX Power Supply - 80 Plus Gold - Low-Noise Fan - Zero RPM - Black by corsair
- **How much does it cost?** $280.49 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/302229463-corsair-rm850x-fully-modular-atx-power-supply-80-plus-gold)

## 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

- • **Premium Reliability:** 100% Japanese 105°C capacitors ensure stable power and longevity.
- • **Whisper-Quiet Cooling:** Magnetic levitation fan delivers ultra-low noise even under load.
- • **Energy-Smart Performance:** 80 PLUS Gold certification keeps your system cool and efficient.
- • **Clean, Customizable Builds:** Fully modular cables mean no clutter—only what your rig needs.
- • **Future-Proof Compatibility:** EPS12V connectors ready for the latest GPUs and motherboards.

## Overview

The CORSAIR RM850x is a fully modular 850W ATX power supply featuring 80 PLUS Gold efficiency, a quiet 135mm magnetic levitation fan, and premium Japanese capacitors for long-term reliability. Designed for clean builds and future-ready compatibility, it offers stable, efficient power delivery backed by a 10-year warranty.

## Description

CORSAIR RM850x Series fully modular power supplies with EPS12V connectors are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. RM850x PSUs use only Japanese 105°C capacitors, for long life and reliability backed by a ten-year warranty. A 135mm magnetic levitation bearing fan ensures high performance coupled with low noise.

Review: Trustworthy PSU - Really well made product. Just for a good set up. I paired it with a i7 13700k and a 4070 super with around 8th fans. Works really good with no issues. It is quiet and will allow an upgrade for a 5080 or something like that. Really good one
Review: Excellent PSU - Clean, efficient, and easy to use. Running my 10850k, 4070, and all the other crap shoved in my tower with zero issues. Modularity is excellent for keeping your system from being a spaghetti mess by only using the cables you need. Included molex cable is excellent if your still using some older hardware or fan hubs. You get what you pay for and corsair is worth the cost to keep your system running stable.

## Features

- Fully Modular: Only connect the cables your system needs, making clean and tidy builds easier.
- 135mm Magnetic Levitation Fan: Utilizes a magnetic levitation bearing and custom engineered rotors for high performance, low noise, and superior reliability.
- EPS12V Connector: For wide compatibility with modern graphics cards and motherboards.
- 100% All Japanese 105°C Capacitors: Premium internal components ensure unwavering power delivery and long-term reliability.
- Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
- 80 PLUS Gold Certified: High efficiency operation for lower power consumption, less noise, and cooler temperatures.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08R5JPTMZ |
| Best Sellers Rank | #5 in Computer Power Supplies |
| Brand | Corsair |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (11,232) |
| Date First Available | June 22, 2022 |
| Item Dimensions LxWxH | 6.3 x 5.91 x 3.39 inches |
| Item Weight | 3.74 pounds |
| Item model number | CP-9020200-NA |
| Manufacturer | Corsair |
| Product Dimensions | 6.3 x 5.91 x 3.39 inches |
| Series | RM850X |

## Product Details

- **Brand:** Corsair
- **Compatible Devices:** Personal Computer
- **Connector Type:** ATX
- **Cooling Method:** Air
- **Form Factor:** ATX
- **Item Weight:** 1.7 Kilograms
- **Item dimensions L x W x H:** 6.3 x 5.91 x 3.39 inches
- **Model Name:** RM850X
- **Output Wattage:** 850
- **Wattage:** 850 watts

## Images

![CORSAIR RM850x Fully Modular ATX Power Supply - 80 Plus Gold - Low-Noise Fan - Zero RPM - Black - Image 1](https://m.media-amazon.com/images/I/81k55rfk1iL.jpg)

## Questions & Answers

**Q: Does this come with cables, or not?**
A: Yes, our PSUs always include cables. With the 2021 RM750x' cables, the following connections are provided: 

o	x1 ATX Cable 24-pin 
o	x2 EPS/ATX12V 8-pin (4+4) 
o	x4 PCIe 8-pin (6+2) 
o	x4 PATA 4-pin 
o	x10 SATA 

If you have any more questions or concerns, please feel free to reach out via support on our website and we'll happily assist you.

**Q: 1000watt. How loud is the fan? My current psu is insanely loud and don’t want another.**
A: You can barely here the fan of this PSU, you are more likely to hear your case fans than this PSU, that include under heavy usage. The fan of this PSU has a unique design which I think contribute to it's quite operation. I highly recommend this!

**Q: What do I need in order to connect it to EU sockets?**
A: Just the Power cable, these work with 110-240v and are auto switching.  You need a C13 to whatever wall plug type is in use in the UK.  I'm sure you can find them in abundance here on Amazon

**Q: Is this compatible with cable kits for previous RMx power supplies?**
A: Yes, cable kits compatible with the 2019 RMx are also compatible with 2021 RMx. 

If you have any more questions or concerns, please feel free to reach out via support on our website and we'll happily assist you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Trustworthy PSU
*by K***. on December 19, 2025*

Really well made product. Just for a good set up. I paired it with a i7 13700k and a 4070 super with around 8th fans. Works really good with no issues. It is quiet and will allow an upgrade for a 5080 or something like that. Really good one

### ⭐⭐⭐⭐⭐ Excellent PSU
*by J***C on December 6, 2025*

Clean, efficient, and easy to use. Running my 10850k, 4070, and all the other crap shoved in my tower with zero issues. Modularity is excellent for keeping your system from being a spaghetti mess by only using the cables you need. Included molex cable is excellent if your still using some older hardware or fan hubs. You get what you pay for and corsair is worth the cost to keep your system running stable.

### ⭐⭐⭐⭐⭐ Plenty of power, good power supply
*by D***H on January 16, 2026*

Great power supply, suits all my needs for a decent price. Being fully modular, it's pretty easy to setup.

## Frequently Bought Together

- CORSAIR RM850x Fully Modular ATX Power Supply - 80 PLUS Gold - Low-Noise Fan - Zero RPM - Black
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- ARCTIC MX-4 (4 g) - Premium Performance Thermal Paste for All Processors (CPU, GPU - PC), Very high Thermal Conductivity, Long Durability, Safe Application, Non-Conductive

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-01-23*