---
product_id: 510217430
title: "RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black"
brand: "corsair"
price: "£195.23"
currency: GBP
in_stock: true
reviews_count: 13
category: "Corsair"
url: https://www.desertcart.co.uk/products/510217430-rm1000x-shift-fully-modular-atx-power-supply-modular-side-interface
store_origin: GB
region: United Kingdom
---

# ATX 3.1 & PCIe 5.1 Certified 1000W Full Modular Power Zero RPM Fan Mode for Silence RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black

**Brand:** corsair
**Price:** £195.23
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your next-level build with silent, sleek, and future-ready energy!

## Quick Answers

- **What is this?** RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black by corsair
- **How much does it cost?** £195.23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/510217430-rm1000x-shift-fully-modular-atx-power-supply-modular-side-interface)

## 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

- • **Whisper-Quiet Operation:** Zero RPM fan mode keeps noise at bay during low to medium loads—focus on work or play without distractions.
- • **Next-Gen Power Standards:** Fully compliant with ATX 3.1 and PCIe 5.1, future-proofing your rig for the latest GPUs and CPUs.
- • **Premium Reliability Inside:** 100% 105°C-rated Japanese electrolytic capacitors ensure rock-solid power delivery and a decade of peace of mind.
- • **Effortless Side-Access Modularity:** Revolutionary side cable interface for quick, clutter-free connections—builds that impress and perform.
- • **Optimized for Fast Wake & Efficiency:** Modern standby compatibility means lightning-fast resume times and smarter energy use.

## Overview

The Corsair RM1000x SHIFT is a 1000W fully modular ATX power supply featuring a unique side cable interface for superior cable management. Certified to ATX 3.1 and PCIe 5.1 standards, it supports the latest hardware with stable, efficient power delivery. Equipped with premium 105°C Japanese capacitors and a zero RPM fan mode, it offers ultra-quiet operation and long-term reliability backed by a 10-year warranty. Ideal for professional builders seeking clean, efficient, and future-proof power solutions.

## Description

CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.

Review: Great PSU, flexible wires and easy cable routing - This PSU is not too long compared to other 1000W units but it also has plugs on the side which makes it quite short so it should be compatible with a lot of cases even if the max supported PSU length is short. The cables it comes with are quite flexible which makes it easy to route around the case. And the cables don't have inline capacitors so it's easy to bend around near the plug. The PSU fan also barely ever turns on. The zero RPM fan mode is really great and is the best implementation across all of the other manufacturers I've seen.
Review: I mean, it works - I'd expect good quality for a $200 power supply, and I haven't felt I wasted my money. The modular design is good, it was easy to install, and the damn thing is so quiet I can't hear it. Runs a 7900 XTX just fine. Looks decent too, though that's not really critical for a PSU. If I had one tiny complaint, it's that I wish they had given one or two more of the standalone 8-pin connectors rather than the 8 pin + 8 pin connectors, makes it a little annoying to hook up a 7900 and looks worse when it's done, but ultimately it still works fine.

## 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 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% 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 | B0BP8B6M7Y |
| Best Sellers Rank | #33 in Computer Power Supplies |
| Brand | Corsair |
| Built-In Media | Item |
| Compatible Devices | Personal Computer |
| Connector Quantity | 30 |
| Connector Type | ATX, EPS |
| Connector Type Used on Cable | ATX, EPS |
| Cooling Method | Air |
| Customer Reviews | 4.6 out of 5 stars 534 Reviews |
| Form Factor | ATX |
| Item Dimensions | 7.09 x 5.91 x 5.08 inches |
| Item Type Name | Power Supplies |
| Item Weight | 4.2 Pounds |
| Manufacturer | Corsair |
| Maximum Input Voltage | 240 Volts (AC) |
| Mfr Part Number | CP-9020253-NA |
| Minimum Input Voltage | 100 Volts |
| Model Name | RM1000x SHIFT |
| Model Number | CP-9020253-NA |
| Number of Fans | 1 |
| Output Wattage | 1000.0 |
| Power Supply Design | Full Modular |
| System Bus Connector Type | 24 Pin, 4+4 Pin |
| UPC | 840006653943 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 105 Degrees Celsius |
| Warranty Description | 10 year manufacturer |
| Wattage | 1000 watts |

## Product Details

- **Brand:** Corsair
- **Compatible Devices:** Personal Computer
- **Connector Type:** ATX, EPS
- **Cooling Method:** Air
- **Form Factor:** ATX
- **Item Weight:** 4.2 Pounds
- **Item dimensions L x W x H:** 7.09 x 5.91 x 5.08 inches
- **Model Name:** RM1000x SHIFT
- **Output Wattage:** 1000.0
- **Wattage:** 1000 watts

## Images

![RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black - Image 1](https://m.media-amazon.com/images/I/81dwGXVwpgL.jpg)
![RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black - Image 2](https://m.media-amazon.com/images/I/81Hz2DknQPL.jpg)
![RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black - Image 3](https://m.media-amazon.com/images/I/81WzZbszsQL.jpg)
![RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black - Image 4](https://m.media-amazon.com/images/I/81SJoTHp-PL.jpg)
![RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black - Image 5](https://m.media-amazon.com/images/I/81iWvmBXSmL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great PSU, flexible wires and easy cable routing
*by B***N on April 21, 2023*

This PSU is not too long compared to other 1000W units but it also has plugs on the side which makes it quite short so it should be compatible with a lot of cases even if the max supported PSU length is short. The cables it comes with are quite flexible which makes it easy to route around the case. And the cables don't have inline capacitors so it's easy to bend around near the plug. The PSU fan also barely ever turns on. The zero RPM fan mode is really great and is the best implementation across all of the other manufacturers I've seen.

### ⭐⭐⭐⭐⭐ I mean, it works
*by A***R on May 12, 2023*

I'd expect good quality for a $200 power supply, and I haven't felt I wasted my money. The modular design is good, it was easy to install, and the damn thing is so quiet I can't hear it. Runs a 7900 XTX just fine. Looks decent too, though that's not really critical for a PSU. If I had one tiny complaint, it's that I wish they had given one or two more of the standalone 8-pin connectors rather than the 8 pin + 8 pin connectors, makes it a little annoying to hook up a 7900 and looks worse when it's done, but ultimately it still works fine.

### ⭐⭐⭐⭐⭐ Glad I chose this one
*by A***C on August 30, 2025*

Runs my RTX 5080 and my i9 14900k seamlessless with lights and other accessories perfectly. This thing is a monster. She fits perfectly, actually better than I had expected when doing a measurement check before I ordered. It is quiet and I had to actually shine my light on it to be sure it was actually running ideally. Connections were perfect and sturdy.

## Frequently Bought Together

- Corsair RM1000x Shift Fully Modular ATX Power Supply - Modular Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - 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
- 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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**Shop now:** [https://www.desertcart.co.uk/products/510217430-rm1000x-shift-fully-modular-atx-power-supply-modular-side-interface](https://www.desertcart.co.uk/products/510217430-rm1000x-shift-fully-modular-atx-power-supply-modular-side-interface)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-23*