--- product_id: 523418689 title: "Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Modern Standby Support - Black" brand: "corsair" price: "$306.70" currency: USD in_stock: true reviews_count: 13 category: "Corsair" url: https://www.desertcart.us/products/523418689-corsair-rm850e-2023-fully-modular-low-noise-atx-power-supply store_origin: US region: United States of America --- # Low-noise 120mm fan 850W power output Fully modular cabling Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Modern Standby Support - Black **Brand:** corsair **Price:** $306.70 **Availability:** ✅ In Stock ## Summary > ⚡ Power up silently, perform endlessly. ## Quick Answers - **What is this?** Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Modern Standby Support - Black by corsair - **How much does it cost?** $306.70 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/523418689-corsair-rm850e-2023-fully-modular-low-noise-atx-power-supply) ## 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:** 105°C-rated capacitors and 5-year warranty deliver rock-solid reliability and peace of mind. - • **Cable Clarity:** Fully modular design means zero clutter—connect only what you need for a sleek, airflow-optimized setup. - • **Next-Gen Ready:** Intel ATX 3.1 & PCIe 5.1 compliance ensures your rig is future-proof and protected against power spikes. - • **Power Your Ambition:** 850 watts of clean, reliable energy to fuel your high-performance build without compromise. - • **Whisper-Quiet Operation:** 120mm rifle bearing fan with smart fan curve keeps noise to a minimum, even under full load. ## Overview The Corsair RM850e (2023) is a fully modular, 850W ATX power supply engineered for modern PC builds. Certified to Intel ATX 3.1 and PCIe 5.1 standards, it offers efficient 80 PLUS Gold performance with ultra-quiet cooling via a 120mm rifle bearing fan. Built with 105°C-rated capacitors and supporting modern standby, it ensures stable, reliable power delivery and rapid wake-from-sleep times. Ideal for professionals and gamers seeking a clean, efficient, and future-ready PSU. ## Description From the manufacturer Review: Power and Silence Combined: A Remarkable PSU - The Corsair RM850ePower Supply is a powerhouse of performance and efficiency, perfectly suited for demanding PC builds. Its fully modular design simplifies cable management, allowing for a clean and organized setup while ensuring maximum airflow within the case. One of the standout features of this PSU is its low-noise operation. Even under heavy loads, the fan remains remarkably quiet, maintaining a peaceful computing environment without sacrificing performance. This is particularly appreciated during intense gaming sessions or when working on CPU-intensive tasks for extended periods. With an 850-watt capacity, this PSU delivers ample power to support high-end components, making it suitable for enthusiasts and gamers alike. Its 80 PLUS Gold certification ensures high efficiency, translating to lower energy consumption and reduced operating costs over time. Installation is straightforward, thanks to the included user manual and modular cables, which allow for easy customization based on the specific needs of your build. The build quality is excellent, as expected from Corsair, with sturdy construction and reliable components. While the performance and features of the RM850e are top-notch, the price may be a deterrent for budget-conscious builders. However, considering its efficiency, reliability, and low-noise operation, the investment is justified for those seeking a premium power supply for their high-performance PC builds. In summary, the Corsair RM850e is a compelling choice for enthusiasts who prioritize performance, efficiency, and quiet operation in their PC setups. Highly recommended. Review: Reliable quality, worth the price - I almost always go with Corsair for power supplies, and this RM850e just proves why. Rock solid, quiet, fully modular, and built with quality components. It may cost a bit more than some brands, but the reliability and peace of mind are worth it. Perfect PSU for a stable build. ## 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 the PCIe Gen 5.1 platform and resisting transient power spikes. - 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 | B0BYKT9SNJ | | Best Sellers Rank | 14,404 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 87 in Power Supplies | | Brand Name | Corsair | | Compatible Devices | Personal Computer | | Connector Types | ATX | | Cooling Method | Air | | Customer Reviews | 4.6 4.6 out of 5 stars (703) | | Fan Size | 120 Millimetres | | Form Factor | ATX | | Item Dimensions | 15 x 14 x 8.6 centimetres | | Item Weight | 1.52 Kilograms | | Manufacturer | Corsair | | Manufacturer Part Number | CP-9020263-UK | | Maximum Input Voltage | 240 Volts (AC) | | Minimum Input Voltage | 100 Volts (AC) | | Model Name | RM850e | | Model Number | CP-9020263-UK | | Number of Fans | 1 | | Output Wattage | 850 | | Power Supply Design | Full Modular | | Product Warranty | 5 year manufacturer | | System Bus Connector Type | 8 Pin | | UPC | 840006699651 | | 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 - **Cooling method:** Air - **Form factor:** ATX - **Item dimensions L x W x H:** 15 x 14 x 8.6 centimetres - **Item weight:** 1.52 Kilograms - **Model name:** RM850e - **Output wattage:** 850 - **Wattage:** 850 watts ## Images ![Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Modern Standby Support - Black - Image 1](https://m.media-amazon.com/images/I/71CnFDhomCL.jpg) ## Questions & Answers **Q: Does it come with a uk power lead?** A: Yes, a UK mains lead was included inside the box. **Q: hi i don't see any cables in the picture or discerption are they coming with it ? and are they white?** A: yes it comes with plenty of cables and they are white. **Q: would a 650 be good to play gta and minecraft im a first time pc buyer** A: Yes should be. I use to run Minecraft and gta on a 500w **Q: Can I use the same cables from the 2019 version** A: According to corsair web page, both are compatible, with the type 4 cable set, so it should work, if using the UK version, others are probably the same, but only shows UK version. Best way to check is ask Corsair, to get a complete answer. I personally don't mix cables. If you buy a new PSU, you will get new cables, anyway ## Customer Reviews ### ⭐⭐⭐⭐⭐ Power and Silence Combined: A Remarkable PSU *by M***W on 19 May 2024* The Corsair RM850ePower Supply is a powerhouse of performance and efficiency, perfectly suited for demanding PC builds. Its fully modular design simplifies cable management, allowing for a clean and organized setup while ensuring maximum airflow within the case. One of the standout features of this PSU is its low-noise operation. Even under heavy loads, the fan remains remarkably quiet, maintaining a peaceful computing environment without sacrificing performance. This is particularly appreciated during intense gaming sessions or when working on CPU-intensive tasks for extended periods. With an 850-watt capacity, this PSU delivers ample power to support high-end components, making it suitable for enthusiasts and gamers alike. Its 80 PLUS Gold certification ensures high efficiency, translating to lower energy consumption and reduced operating costs over time. Installation is straightforward, thanks to the included user manual and modular cables, which allow for easy customization based on the specific needs of your build. The build quality is excellent, as expected from Corsair, with sturdy construction and reliable components. While the performance and features of the RM850e are top-notch, the price may be a deterrent for budget-conscious builders. However, considering its efficiency, reliability, and low-noise operation, the investment is justified for those seeking a premium power supply for their high-performance PC builds. In summary, the Corsair RM850e is a compelling choice for enthusiasts who prioritize performance, efficiency, and quiet operation in their PC setups. Highly recommended. ### ⭐⭐⭐⭐⭐ Reliable quality, worth the price *by G***E on 25 September 2025* I almost always go with Corsair for power supplies, and this RM850e just proves why. Rock solid, quiet, fully modular, and built with quality components. It may cost a bit more than some brands, but the reliability and peace of mind are worth it. Perfect PSU for a stable build. ### ⭐⭐⭐⭐⭐ Great PSU by reliable brand *by D***B on 11 December 2025* Very solid and dependable PSU. Totally modular design allowing for easy cable management. Worked well in my Fractal Meshify C case ## Frequently Bought Together - Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compliant - 105°C-Rated Capacitors - 80 PLUS Gold Efficiency - Modern Standby Support - Black - MSI B650 GAMING PLUS WIFI Motherboard, ATX - Supports AMD Ryzen 9000 / 8000 / 7000 Series Processors, AM5 - 14+2 Duet Rail VRM, DDR5 Memory Boost 6400+MHz/OC, 2 x PCIe 4.0 x16, 2 x M.2 Gen4, Wi-Fi 6E - AMD Ryzensets 5 7600X Processor (integrated radeon graphics, 6 cores/12 threads, 105W TDP, AM5 socket, 38MB cache, up to 5.3 GHz max boost, no cooler) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/523418689-corsair-rm850e-2023-fully-modular-low-noise-atx-power-supply](https://www.desertcart.us/products/523418689-corsair-rm850e-2023-fully-modular-low-noise-atx-power-supply) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*