---
product_id: 507958488
title: "Corsair RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black"
brand: "corsair"
price: "$374.37"
currency: USD
in_stock: true
category: "Corsair"
url: https://www.desertcart.us/products/507958488-corsair-rm850x-shift-fully-modular-atx-power-supply-80-plus
store_origin: US
region: United States of America
---

# 850W peak power Zero RPM silent fan mode 10-year warranty Corsair RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black

**Brand:** corsair
**Price:** $374.37
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your ambition with silence and style

## Quick Answers

- **What is this?** Corsair RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black by corsair
- **How much does it cost?** $374.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/507958488-corsair-rm850x-shift-fully-modular-atx-power-supply-80-plus)

## 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

- • **Built to Last:** Premium 105°C Japanese capacitors and a decade-long warranty for unwavering durability
- • **Power that Keeps Up:** 850 watts of reliable, high-efficiency power for your cutting-edge setup
- • **Future-Proof Certified:** Intel ATX 3.1 and PCIe 5.1 ready to handle next-gen hardware demands
- • **Whisper-Quiet Operation:** Zero RPM fan mode means near-silent performance when your system is cruising
- • **Tailored Cable Management:** Fully modular Type 5 Gen 1 micro-fit connectors reduce clutter and maximize airflow

## Overview

The Corsair RM850x SHIFT is a fully modular 850W ATX power supply engineered for professionals and enthusiasts. Certified to Intel ATX 3.1 and PCIe 5.1 standards, it delivers stable, efficient power with premium 105°C Japanese capacitors. Its zero RPM fan mode ensures whisper-quiet operation under low to medium loads, while the innovative micro-fit connectors streamline cable management. Backed by a 10-year warranty, this PSU is designed for long-term reliability and future-ready performance.

## Description

Buy

## Features

- Fully Modular Micro-Fit PSU Connectors: CORSAIR Type 5 Gen 1 micro-fit PSU cables mean you only connect the cables your system needs while taking up less space
- Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting the PCIe Gen 5.1 platform and resisting transient power spikes
- Zero RPM Fan Mode Support: At low and medium loads the cooling fan switches off entirely for near-silent operation
- 100 percent 105°C-Rated Japanese Electrolytic Capacitors: Premium internal components deliver unwavering power delivery and long-term reliability
- Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BPMXQRDY |
| Best Sellers Rank | 14,329 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 88 in Power Supplies |
| Brand Name | Corsair |
| Compatible Devices | Personal Computer |
| Connector Quantity | 2 |
| Connector Types | ATX, PCI Express |
| Cooling Method | Air |
| Country of Origin | China |
| Customer Reviews | 4.6 4.6 out of 5 stars (162) |
| EU Spare Part Availability Duration | 10 Years |
| Fan Size | 14 Centimetres |
| Form Factor | ATX |
| Item Dimensions | 16 x 15 x 8.6 centimetres |
| Item Weight | 1.7 Kilograms |
| Manufacturer | Corsair |
| Manufacturer Part Number | 840006653820 |
| Maximum Input Voltage | 230 Volts |
| Minimum Input Voltage | 100 Volts (AC) |
| Model Name | RM850x SHIFT |
| Model Number | CP-9020252-UK |
| Number of Fans | 1 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Wattage | 850 |
| Power Supply Design | Full Modular |
| Product Warranty | 10 year manufacturer |
| System Bus Connector Type | ATX |
| UPC | 840006653820 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 105 Degrees Celsius |
| Wattage | 850 watts |

## Product Details

- **Brand:** Corsair
- **Compatible devices:** Personal Computer
- **Connector type:** ATX, PCI Express
- **Cooling method:** Air
- **Form factor:** ATX
- **Item dimensions L x W x H:** 16 x 15 x 8.6 centimetres
- **Item weight:** 1.7 Kilograms
- **Model name:** RM850x SHIFT
- **Output wattage:** 850
- **Wattage:** 850 watts

## Images

![Corsair RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black - Image 1](https://m.media-amazon.com/images/I/81OwObzrzLL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: What cables come with the psu? im looking to power a asus rog strix 3070ti which needs 3x pcie connections.**
A: There are 2x dual head PCI cables included, which is fine for a 3070Ti. YOu can go ahead and buy

**Q: Anyone has strange buzzing sound like coil whine?**
A: It may be worth consulting with the seller to potentially identify any faults.

**Q: Is the elecricity running cost of an 750 rmx around the same as a 650 psu. im looking to replace my existing 650. or would power cost be a lot more.**
A: If the rest of the PC is unchanged, the cost will be the same, give or take a tiny difference that will depend on the efficiency of the two PSUs. If the existing 650W PSU is quite old, chances are the RM750x will be more efficient so will cost a little less to run.

**Q: Is this PSU signal rail or multi rail**
A: This PSU is single rail.

## Frequently Bought Together

- Corsair RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black
- AMD Ryzensets 7 7800X3D Processor with 3D V Cache technology (integrated Radeon Graphics, 8 cores/16 threads, 120W TDP, AM5 Socket, 104MB cache, up to 5.0 GHz max boost, no cooler)
- Samsung 990 PRO NVMe M.2 SSD, 2 TB, PCIe 4.0, 7,450 MB/s read, 6,900 MB/s write, Internal SSD, For gaming and video editing, MZ-V9P2T0BW

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-22*