Corsair RM850e ATX 3.1 Gold Fully Modular White SMPS

The Corsair RMe Series RM850e is an 850-watt fully modular ATX power supply designed for modern enthusiast PC builds that demand reliable power delivery, quiet operation, and next-generation connector support. Holding formal ATX 3.1 certification and PCIe 5.1 compliance, the RM850e is built to meet the strictest current platform standards without compromise. At the heart of its power delivery is a single +12V rail topology paired with a resonant LLC circuit and DC-DC conversion stage. This combination delivers stable, low-ripple power across the full wattage range. Capacitors are rated to 105°C industrial grade, contributing to the unit’s long-term reliability. Efficiency is Cybenetics Gold certified, meaning the RM850e sustains up to 90% efficiency under typical loads — translating to lower electricity draw, reduced heat output, and quieter overall system acoustics. The 120mm rifle-bearing fan operates on a carefully tuned fan curve that allows fanless or near-silent running at light and moderate loads, spinning up progressively only as temperatures rise. For GPU connectivity, a native 600W-capable 12V-2×6 cable is included as standard. The dual-colour connector design provides a clear visual cue that the cable is fully seated, which is an important safety indicator when powering high-draw PCIe 5.1 graphics cards. Three additional 6+2-pin PCIe connectors and six SATA connectors round out the cable lineup. All cables use an ultra-flexible embossed design with low-profile combs, making routing easier in compact or high-density builds. The chassis measures just 140mm in depth, fitting comfortably in mid-tower and even many compact ATX cases where longer units can obstruct cable runs or airflow. The fully modular design means unused cables stay out of the case entirely, further aiding airflow and aesthetics. Modern Standby support ensures extremely fast wake- sleep response, which is required by contemporary Intel and AMD platforms for proper low-power-state behaviour. Verified Specifications: – Wattage: 850W – Rail topology: Single +12V rail – Efficiency certification: Cybenetics Gold (up to ~90%) – ATX standard: ATX 3.1 certified – GPU connector: PCIe 5.1 12V-2×6 (native 600W rated) – PCIe 6+2-pin connectors: 3 – SATA connectors: 6 – Fan: 120mm rifle-bearing – Chassis depth: 140mm – Capacitors: 105°C industrial-grade rated – Cabling: Fully modular, ultra-flexible embossed – Warranty: 7 years – Colour: White – SKU: CP-9020293-IN – Series: RMe