Corsair RM850e (2025) 850W ATX 3.1 Fully Modular Power Supply

The Corsair RM850e (2025) is an 850W fully modular ATX 3.1 power supply built for high-performance PC builds. Certified to the ATX 3.1 and PCIe 5.1 standards, it handles the transient power demands of the latest Nvidia 40 Series and AMD RDNA 3 graphics cards with ease, including those using the native 12V-2x6 connector.

UK-based seller
Tracked delivery across the UK
Genuine product sourced through established UK suppliers and distribution partners

• Wattage: 850W
• Form Factor: ATX 3.1 / PCIe 5.1
• Efficiency: Cybenetics Gold certified
• Modularity: Fully modular
• Fan: 1 x 120mm rifle bearing fan with Zero RPM mode
• +12V Rail: Single rail, 70.8A
• Native 12V-2x6 connector: Supports latest-generation GPUs without adapters
• Capacitors: 105°C-rated for long-term reliability
• MTBF: 100,000 hours
• Colour: Black

The RM850e (2025) offers a step up in headroom over the 750W model, making it a sensible choice for builds with power-hungry GPUs or those planning future upgrades. The fully modular cabling keeps the interior tidy, and the compact 140mm chassis fits comfortably in most modern ATX cases. Resonant LLC topology with DC-to-DC conversion ensures clean, stable power delivery across a wide range of loads.

Cable Compatibility Note: This unit is designed for use with genuine Corsair Type 4 cable sets only. Do not use cables from other Corsair PSU generations, as they are not compatible.

Delivery & Fulfilment
This product is sold by TechFinder UK, a UK-based sole trader business. All hardware is sourced through established UK suppliers and distribution partners. Customers can typically expect to receive their order within 3–5 business days from the date the order is placed, with free tracked delivery across the United Kingdom.

Why Buy from TechFinder UK?

• UK-based sole trader — genuine products, real accountability
• Sourced through established distribution partners
• Secure checkout
• Free tracked UK delivery — typically 3–5 business days from the date the order is placed
• Pre- and post-purchase support available

Technical Specifications

• Form Factor: ATX 3.1
• Wattage: 850W
• Efficiency Certification: Cybenetics Gold
• +12V Rail: Single rail — 70.8A
• Modularity: Fully modular
• Fan: 1 x 120mm rifle bearing
• Zero RPM Mode: Yes
• PFC: Active
• AC Input: 100–240VAC
• MTBF: 100,000 hours
• Motherboard Connector: 1 x 24-pin ATX — 610mm
• CPU Connectors: 2 x 8-pin (4+4) EPS/ATX12V — 750mm
• PCIe Connectors: 1 x 12+4-pin 12V-2x6 (600W) — 650mm; 1 x 12+4-pin to 2x 8-pin (6+2) adapter — 650mm; 1 x 8-pin (6+2) PCIe — 650mm
• SATA Connectors: 6 x SATA (across two cables)
• Peripheral Connectors: 2 x PATA (Molex)
• Dimensions: 140 x 150 x 86mm (W x H x D)
• Colour: Black
• Warranty: 7 Years Corsair Manufacturer Warranty

Package Contents

• Corsair RM850e ATX Power Supply
• UK Power Cord
• Modular Cable Set (Corsair Type 4)
• Mounting Screws
• Cable Ties

Product Identification
Model: RM850e (2025)
MPN: CP-9020296-UK
UPC: 840006691266