---
product_id: 727593833
title: "RM850e (2025) ATX 3.1 PCIe 5.1 Ready 850W Power Supply – White | Native 12V-2x6 Cable Included, Low-Noise, Fully Modular, Cybenetics Gold, Modern Standby Mode, NA"
brand: "corsair"
price: "¥52892"
currency: JPY
in_stock: true
reviews_count: 13
category: "Corsair"
url: https://www.desertcart.jp/products/727593833-rm850e-2025-atx-3-1-pcie-5-1-ready-850w
store_origin: JP
region: Japan
---

# 850W peak power output Fully modular cabling 105°C-rated capacitors RM850e (2025) ATX 3.1 PCIe 5.1 Ready 850W Power Supply – White | Native 12V-2x6 Cable Included, Low-Noise, Fully Modular, Cybenetics Gold, Modern Standby Mode, NA

**Brand:** corsair
**Price:** ¥52892
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your build with quiet confidence and future-proof muscle!

## Quick Answers

- **What is this?** RM850e (2025) ATX 3.1 PCIe 5.1 Ready 850W Power Supply – White | Native 12V-2x6 Cable Included, Low-Noise, Fully Modular, Cybenetics Gold, Modern Standby Mode, NA by corsair
- **How much does it cost?** ¥52892 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/727593833-rm850e-2025-atx-3-1-pcie-5-1-ready-850w)

## 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:** Industrial-grade 105°C Japanese capacitors and a 7-year warranty ensure rock-solid reliability and longevity.
- • **Cable Clarity:** Fully modular design means zero clutter—connect only what you need for a sleek, airflow-optimized build.
- • **Future-Ready Tech:** ATX 3.1 & PCIe 5.1 certified with native 12V-2x6 cable, ready for next-gen GPUs and power-hungry rigs.
- • **Power Your Ambition:** 850W of clean, stable power to fuel high-end CPUs and GPUs without breaking a sweat.
- • **Whisper-Quiet Performance:** 120mm rifle bearing fan with smart fan curve keeps noise near silent, even under full load.

## Overview

The CORSAIR RM850e (2025) is a fully modular 850W power supply engineered for high-performance PCs. Certified to the latest ATX 3.1 and PCIe 5.1 standards, it supports modern GPUs with native 12V-2x6 connectors. Its 120mm rifle bearing fan ensures whisper-quiet operation, while industrial-grade 105°C capacitors guarantee stable, reliable power delivery. With Cybenetics Gold efficiency and Modern Standby compatibility, this PSU offers efficient, fast wake-from-sleep performance. Backed by a 7-year warranty, it’s a future-proof foundation for demanding gaming and workstation builds.

## Description

CORSAIR RMe Series Fully Modular Low-Noise Power Supplies provide quiet, reliable power with Cybenetics Gold efficiency to your PC. The modular cables make PC builds easy, as you connect only the cables your system requires. With ATX 3.1 and PCIe 5.1 compliance with inclusion of native 12V-2x6 connnector and cable, and an array of PCIe 8-pin power connectors, RMe PSUs have the connections needed to power today’s demanding PC hardware. Industrial-grade, 105°C-rated capacitors deliver superb electrical performance, backed by a seven-year warranty. With a 140mm-long casing that works with nearly any modern case, the CORSAIR RMe Series is steady power for your system. Box Contents 1x 24-pin ATX (24-pin) Connector Cable 2x 8-pin ATX 12V/EPS12V (4+4-pin) Connector Cables 1x 8-pin PCIe (6+2-pin) Connector Cable 1x 600W 12V-2x6 (12+4-pin) Connector Cable 1x 12V-2x6 (12+4-pin) to dual 8-pin PCIe (6+2-pin) Cable 6x SATA Connectors 2x PATA Connectors

Review: Reliable and Quiet 850W Power Supply for a High-Performance PC Build - The CORSAIR RM850e (2025) is a solid choice for a modern gaming or performance PC build. With 850 watts of power and support for the latest ATX 3.1 and PCIe 5.1 standards, it provides plenty of headroom for powerful components while keeping the setup ready for newer hardware. I really like the fully modular design because you only need to connect the cables your system actually uses. This makes cable management much cleaner and helps improve airflow inside the case, which is especially nice when building a PC with a tempered glass panel. The included 12V-2x6 cable is another useful feature for compatible modern graphics cards, eliminating the need for bulky adapter setups. The low-noise operation is also appreciated, particularly for gaming, working, or content creation where a quieter system makes a noticeable difference. The Cybenetics Gold efficiency rating and 105°C-rated capacitors add confidence for long-term use, while Modern Standby support rounds out the feature set for today's PC platforms. Overall, the CORSAIR RM850e is a well-rounded power supply that combines strong output, modern compatibility, quiet performance, and clean cable management. It's an excellent foundation for a powerful gaming PC or workstation and leaves plenty of flexibility for future upgrades. 💻⚡✨
Review: Handles My i9-12900KS + RTX 3090 Rig Without Breaking a Sweat - I’ve been building PCs for over a decade, and this is easily one of the most impressive power supplies I’ve used to date. I picked up the CORSAIR RM850e (2025 revision) as part of a rebuild centered around an Intel i9-12900KS and RTX 3090, and I’ve been nothing but impressed so far. Build Quality & Design: The unit itself is solid — heavy in a reassuring way, with a clean black finish and no unnecessary branding or flashy extras. The fully modular design is a huge plus, especially for managing cables in a tight mid-tower. I appreciated that the included cables were all black and flat — easy to route behind the motherboard tray, and they look clean without custom sleeving. Installation & Cabling: Installation was simple, and everything fit snugly. I’m using the standard 3x 8-pin for the 3090, but it’s nice knowing the 12V-2x6 cable is included in case I upgrade to a future PCIe 5.1 card later on. No loose connectors, no weird bends required — and unlike some modular PSUs I’ve dealt with, the ports on the unit are clearly labeled and firmly seated. Performance & Stability: Despite powering a very power-hungry setup, this PSU hasn’t flinched once. The 12900KS, even under boost/load, can be a voltage-hungry CPU, especially paired with the 3090 — but even during max load stress testing (Cinebench + Heaven benchmark running together), rails stayed completely stable, no crashes or brownouts, and no sign of power-related instability. Noise & Efficiency: Corsair nailed the noise levels. During idle and light gaming, the fan doesn't even spin up. Even when it does under load, it’s so quiet it fades into the background of my other case fans. My case has good airflow, but the fan curve on this PSU is genuinely impressive. It’s also Cybenetics Gold rated, and the system draws power very efficiently — I've been monitoring wattage via a smart plug, and it lines up well with published benchmarks for power efficiency. Extras & Future-Proofing: ATX 3.1 & PCIe 5.1 ready 105°C-rated Japanese capacitors (a must for long-term reliability) Modern Standby support works perfectly — fast wake times, zero sleep issues in Windows 11 Final Thoughts: For anyone running a high-end system like mine — especially with power-hungry components like the i9-12900KS and RTX 3090 — this PSU offers peace of mind. No coil whine, no overheating, no second-guessing whether it’s enough. It’s quiet, efficient, and built with headroom for future GPUs thanks to the included 12V-2x6 cable and compliance with the latest standards. Highly recommend if you’re building or upgrading a performance-focused rig and want something that’ll last.

## Features

- Fully Modular PSU: Reliable and efficient, low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs
- Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting PCIe 5.1 platform withstands 2x transient power excursions from the GPU
- Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load
- 105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance
- Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DZXLK5BY |
| Best Sellers Rank | #1 in Computer Power Supplies |
| Brand | Corsair |
| Compatible Devices | Monitor |
| Connector Type | ATX |
| Connector Type Used on Cable | ATX |
| Cooling Method | Air |
| Customer Reviews | 4.8 out of 5 stars 2,507 Reviews |
| Form Factor | ATX |
| Item Dimensions | 5.91 x 5.51 x 3.35 inches |
| Item Weight | 3.4 pounds |
| Manufacturer | Corsair |
| Maximum Input Voltage | 240 volts_of_alternating_current |
| Mfr Part Number | CP-9020293-NA |
| Minimum Input Voltage | 100 volts_of_alternating_current |
| Model Name | CORSAIR RM850e |
| Model Number | CP-9020293-NA |
| Number of Fans | 1 |
| Number of Items | 1 |
| Output Wattage | 850 watts |
| Power Supply Design | Full Modular |
| System Bus Connector Type | 24 Pin |
| UPC | 840006687139 |
| Unit Count | 1 Count |
| Warranty Description | 7 Year Manufacturer |

## Product Details

- **Brand:** Corsair
- **Compatible Devices:** Monitor
- **Connector Type:** ATX
- **Cooling Method:** Air
- **Form Factor:** ATX
- **Item Weight:** 3.4 Pounds
- **Item dimensions L x W x H:** 5.91 x 5.51 x 3.35 inches
- **Model Name:** CORSAIR RM850e
- **Output Wattage:** 850 Watts
- **Power Supply Design:** Full Modular

## Images

![RM850e (2025) ATX 3.1 PCIe 5.1 Ready 850W Power Supply – White | Native 12V-2x6 Cable Included, Low-Noise, Fully Modular, Cybenetics Gold, Modern Standby Mode, NA - Image 1](https://m.media-amazon.com/images/I/61hQEdnIrmL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable and Quiet 850W Power Supply for a High-Performance PC Build
*by A***Y on August 10, 2026*

The CORSAIR RM850e (2025) is a solid choice for a modern gaming or performance PC build. With 850 watts of power and support for the latest ATX 3.1 and PCIe 5.1 standards, it provides plenty of headroom for powerful components while keeping the setup ready for newer hardware. I really like the fully modular design because you only need to connect the cables your system actually uses. This makes cable management much cleaner and helps improve airflow inside the case, which is especially nice when building a PC with a tempered glass panel. The included 12V-2x6 cable is another useful feature for compatible modern graphics cards, eliminating the need for bulky adapter setups. The low-noise operation is also appreciated, particularly for gaming, working, or content creation where a quieter system makes a noticeable difference. The Cybenetics Gold efficiency rating and 105°C-rated capacitors add confidence for long-term use, while Modern Standby support rounds out the feature set for today's PC platforms. Overall, the CORSAIR RM850e is a well-rounded power supply that combines strong output, modern compatibility, quiet performance, and clean cable management. It's an excellent foundation for a powerful gaming PC or workstation and leaves plenty of flexibility for future upgrades. 💻⚡✨

### ⭐⭐⭐⭐⭐ Handles My i9-12900KS + RTX 3090 Rig Without Breaking a Sweat
*by S***B on June 27, 2025*

I’ve been building PCs for over a decade, and this is easily one of the most impressive power supplies I’ve used to date. I picked up the CORSAIR RM850e (2025 revision) as part of a rebuild centered around an Intel i9-12900KS and RTX 3090, and I’ve been nothing but impressed so far. Build Quality & Design: The unit itself is solid — heavy in a reassuring way, with a clean black finish and no unnecessary branding or flashy extras. The fully modular design is a huge plus, especially for managing cables in a tight mid-tower. I appreciated that the included cables were all black and flat — easy to route behind the motherboard tray, and they look clean without custom sleeving. Installation & Cabling: Installation was simple, and everything fit snugly. I’m using the standard 3x 8-pin for the 3090, but it’s nice knowing the 12V-2x6 cable is included in case I upgrade to a future PCIe 5.1 card later on. No loose connectors, no weird bends required — and unlike some modular PSUs I’ve dealt with, the ports on the unit are clearly labeled and firmly seated. Performance & Stability: Despite powering a very power-hungry setup, this PSU hasn’t flinched once. The 12900KS, even under boost/load, can be a voltage-hungry CPU, especially paired with the 3090 — but even during max load stress testing (Cinebench + Heaven benchmark running together), rails stayed completely stable, no crashes or brownouts, and no sign of power-related instability. Noise & Efficiency: Corsair nailed the noise levels. During idle and light gaming, the fan doesn't even spin up. Even when it does under load, it’s so quiet it fades into the background of my other case fans. My case has good airflow, but the fan curve on this PSU is genuinely impressive. It’s also Cybenetics Gold rated, and the system draws power very efficiently — I've been monitoring wattage via a smart plug, and it lines up well with published benchmarks for power efficiency. Extras & Future-Proofing: ATX 3.1 & PCIe 5.1 ready 105°C-rated Japanese capacitors (a must for long-term reliability) Modern Standby support works perfectly — fast wake times, zero sleep issues in Windows 11 Final Thoughts: For anyone running a high-end system like mine — especially with power-hungry components like the i9-12900KS and RTX 3090 — this PSU offers peace of mind. No coil whine, no overheating, no second-guessing whether it’s enough. It’s quiet, efficient, and built with headroom for future GPUs thanks to the included 12V-2x6 cable and compliance with the latest standards. Highly recommend if you’re building or upgrading a performance-focused rig and want something that’ll last.

### ⭐⭐⭐⭐⭐ Works on an NZXT H7 Flow case perfectly
*by K***R on August 14, 2026*

Great PSU. I generally get SeaSonic Focus GX PSUs and decided to try this out. Very happy with the purchase, hope it lasts like the SeaSonics.

## Frequently Bought Together

- CORSAIR RM850e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – White
- AMD Ryzen 7 7800X3D 8-Core, 16-Thread Desktop Processor
- CORSAIR VENGEANCE RGB DDR5 RAM 32GB (2x16GB) 6000MHz CL36-44-44-96 1.35V Intel XMP Desktop Computer Memory - White (CMH32GX5M2E6000C36W)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-24*