---
product_id: 507958488
title: "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: "HK$2984"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/507958488-rm850x-shift-fully-modular-atx-power-supply-80-plus-gold
store_origin: HK
region: Hong Kong
---

# 850W peak power Zero RPM near-silent fan ATX 3.1 & PCIe 5.1 certified 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:** HK$2984
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your ambition with silence and precision.

## Quick Answers

- **What is this?** 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?** HK$2984 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/507958488-rm850x-shift-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

- • **Built to Last:** Premium 105°C-rated Japanese capacitors guarantee stable, reliable power for years of uninterrupted performance.
- • **Next-Gen Ready:** Intel ATX 3.1 and PCIe 5.1 compliance ensures your rig is future-proofed for cutting-edge hardware.
- • **Instant Wake-Up:** Modern Standby compatibility delivers lightning-fast resume times and improved energy efficiency.
- • **Tailored Power Delivery:** Fully modular Micro-Fit cables reduce clutter and optimize airflow for a sleek, professional build.
- • **Whisper-Quiet Operation:** Zero RPM fan mode keeps noise at bay during low to medium loads—focus without distractions.

## Overview

The Corsair RM850x SHIFT is a fully modular 850W ATX power supply engineered for professionals who demand clean builds and future-ready performance. Certified to Intel ATX 3.1 and PCIe 5.1 standards, it features premium Japanese capacitors, a zero RPM fan mode for silent operation, and Micro-Fit connectors that minimize cable clutter. Designed for reliability and efficiency, it supports modern standby for rapid wake times, making it the ultimate power solution for high-end, noise-conscious setups.

## Description

RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black

## 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 |
|---------------|-------|
| Brand | Corsair |
| Product Dimensions | 16 x 15 x 8.6 cm; 1.7 kg |
| Item model number | CP-9020252-UK |
| Manufacturer | Corsair |
| Series | RM850x SHIFT |
| Colour | Black |
| Form Factor | ATX |
| Voltage | 100 Volts |
| Wattage | 850 watts |
| Are Batteries Included | No |
| Item Weight | 1.7 kg |
| Guaranteed software updates until | unknown |

## Product Details

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

## Images

![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)
![RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black - Image 2](https://m.media-amazon.com/images/I/81Lfjhg3J1L.jpg)
![RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black - Image 3](https://m.media-amazon.com/images/I/81WzZbszsQL.jpg)
![RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black - Image 4](https://m.media-amazon.com/images/I/81BEwc2hAVL.jpg)
![RM850x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - PCIe 5.1 - Zero RPM - Modular Side Interface - Black - Image 5](https://m.media-amazon.com/images/I/81gxHU2qTSL.jpg)

## Available Options

This product comes in different **Colour Name, Size Name** 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 Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-26*