Corsair RM850e 850W Fully Modular ATX 3.1 PCIe 5.1 Power Supply

Corsair RM850e 850W Fully Modular ATX 3.1 PCIe 5.1 Power Supply

New, sealed Corsair RM850e 850W power supply — a high-quality, fully modular PSU for modern gaming PCs and workstation builds.

The Corsair RM850e is a strong choice for anyone building or upgrading a modern PC. With 850W of power, fully modular cabling, ATX 3.1 certification and PCIe 5.1 compatibility, it is ready for current-generation graphics cards and future upgrades.

Its native 12V-2x6 GPU cable means cleaner compatibility with modern NVIDIA graphics cards without relying on bulky adapters, while the compact 140mm length helps with cable management in a wide range of PC cases.

PC36 has excess stock which we're making available to everyone for a limited time, at a great price

Key features

• 850W continuous power — suitable for a wide range of gaming and creator PCs
• Fully modular design — only connect the cables your build actually needs
• ATX 3.1 certified — built for modern power delivery requirements
• PCIe 5.1 compatible — ready for current and next-generation graphics cards
• Native 600W-capable 12V-2x6 GPU cable — ideal for modern NVIDIA GPUs
• Cybenetics Gold efficiency — efficient, reliable power delivery
• Cybenetics A noise rating — designed for quiet operation
• 120mm rifle-bearing fan with low-noise fan curve
• Zero RPM fan mode for silent operation at low loads
• Compact 140mm length for easier installation and cleaner cable routing
• 105°C-rated industrial-grade capacitors
• 7-year Corsair warranty

Specifications

• Brand: Corsair
• Model: RM850e
• Series: RMe Series
• MPN: CP-9020296-UK
• EAN: 0840006691266
• Power output: 850W
• Form factor: ATX
• Modular: Fully modular
• Efficiency rating: Cybenetics Gold
• Noise rating: Cybenetics A
• ATX standard: ATX 3.1
• PCIe standard: PCIe 5.1 compatible
• Fan: 120mm rifle-bearing fan
• Zero RPM mode: Yes
• Dimensions: 140 × 150 × 86mm
• Weight: 2.93kg
• Warranty: 7 years
• Condition: New and sealed

Included cables

• 1 × Modular ATX 24-pin cable
• 2 × EPS / ATX 12V 8-pin CPU cables
• 1 × Native 12V-2x6 GPU cable
• 1 × 12V-2x6 to dual 8-pin PCIe cable
• PCIe 8-pin cable support
• SATA / peripheral power cables
• AC power cable (UK)
• Mounting screws and cable ties

Important: Always use the cables supplied with this PSU, or genuine compatible Corsair Type 4 cables. Do not mix modular PSU cables from other power supplies.

Best suited for

• Modern gaming PC builds
• Systems containing graphics cards up to and including RTX 5080, and Radeon RX 9070 XT (but always check total system power draw)
• High-quality AM5 or Intel gaming platforms
• Clean builds where modular cabling matters
• Buyers who want a strong PSU foundation for future upgrades

Condition

This item is new and sealed. Product images are representative; packaging may vary slightly by batch.