Corsair RM850x

Overview

The Corsair RM850x is the gold-standard 850W fully modular ATX power supply, updated for modern builds with ATX 3.1 compliance and PCIe 5.1 support. A native 12V-2x6 connector delivers up to 600W to the latest GPUs, while 2 EPS ports power today's demanding processors. Its 140mm fluid dynamic bearing fan with magnetic dome and Zero RPM Mode runs silently at low to medium loads, with a manual override knob for extra airflow. Built with 100% Japanese 105°C-rated electrolytic capacitors, the RM850x delivers clean, stable power backed by a 10-year warranty.

✨ Key Highlights

• ATX 3.1 certified and PCIe 5.1 ready with a native 12V-2x6 cable delivering up to 600W to modern graphics cards, including NVIDIA GeForce RTX 40 and RTX 50 series GPUs
• 80 PLUS Gold and Cybenetics Gold certified with a Cybenetics A noise rating for high-efficiency, near-silent power delivery
• 140mm fluid dynamic bearing fan with magnetic dome structure and Zero RPM Mode stays off at low to medium loads, plus a manual fan override knob for extra cooling when needed
• Built with 100% industrial-grade 105°C-rated Japanese electrolytic capacitors for reliable power delivery and long-term durability under continuous load
• Fully modular Type 4 connectors with embossed cabling and low-profile combs, Modern Standby support, and a 10-year warranty