CORSAIR RM850x 850W 80 PLUS Gold Fully Modular PSU

Description

Overview

The CORSAIR RM850x is a high‑efficiency 850W ATX power supply from the RMx range. Designed for enthusiast desktops and high‑performance builds, it combines 80 PLUS Gold efficiency with fully modular Type‑4 cabling and quiet operation for a cleaner internal layout and easier installation.

Key features

• 850 watts continuous output with a single +12V rail for modern CPUs and GPUs.
• 80 PLUS Gold (Cybenetics Gold‑level) efficiency to reduce wasted heat and power draw.
• Fully modular Type‑4 cables to fit only the connectors you need and reduce cable clutter.
• 140mm low‑noise fan with magnetic levitation bearing and Zero‑RPM mode for near‑silent operation at light loads.
• 105°C‑rated Japanese capacitors and protections (OVP/OCP/OTP/SCP) for reliability.
• ATX 3.1 compliance and native support for modern GPU power requirements (includes a native 12V‑2×6 connector on supported SKUs).
• Long warranty period (10 years) and 100,000‑hour MTBF as specified by the manufacturer.

What’s in the box & useful specs

• Modular ATX power supply unit, mains power cable and a set of modular DC cables, cable ties and mounting screws.
• Dimensions: 160 x 150 x 86 mm (L x W x H). Weight: ~3.28 kg.
• Connector counts (manufacturer listing): 1× 24‑pin ATX, 2× EPS/ATX12V 8‑pin (4+4), 3× PCIe 8‑pin (6+2), SATA connectors: 8, PATA connectors: 3. Exact cable configuration can vary by regional SKU.
• Operating range: 100–240 V AC, 47–63 Hz. Total continuous power: 850 W.

Note: Corsair have released multiple RM850x revisions (different regional SKUs and later ATX 3.1‑compliant variants). Confirm the part number (MPN/SKU) before ordering to ensure the exact cable set and connector types you require.