Corsair RM1200x Shift 1200 Watt 80 Plus Gold SMPS

The Corsair RM1200x Shift is a 1200-watt ATX power supply designed for high-performance gaming and workstation builds that demand both headroom and clean power delivery. Its defining feature is the Shift form factor, which relocates the modular cable connectors from the rear of the unit to the side panel — a design choice that simplifies cable routing, reduces clutter inside the case, and makes connector swaps significantly more convenient without pulling the PSU from its mounting position. At 1200 watts of continuous output, this unit is well-suited for systems running enthusiast-class GPUs and multi-core processors simultaneously under sustained load. The 80 Plus Gold efficiency rating confirms that the supply meets stringent efficiency thresholds at various load levels, helping to reduce heat output and operating costs over extended sessions. Cabling is fully modular via Micro-Fit connectors, meaning every cable — including the ATX motherboard and EPS CPU lines — detaches completely. Builders can install only the cables a given system requires, keeping the interior of the case tidy and improving airflow. The 140mm fan uses a fluid dynamic bearing, a construction method associated with smoother, quieter operation and longer operational lifespan compared to conventional sleeve-bearing fans. Verified Specifications: • Model: Corsair RM1200x Shift • SKU / Part Number: CP-9020254-IN • GTIN / EAN: 840006651796 • Rated Output: 1200W • Efficiency Certification: 80 Plus Gold • Modular Type: Fully Modular (Micro-Fit connectors) • Fan Size: 140mm Fluid Dynamic Bearing • Connector Position: Side-mounted (Shift design) • Product Type: Gaming / High-Performance ATX PSU • Brand: Corsair This power supply pairs well with other Corsair ecosystem components, including the Corsair AX1600i for those seeking a higher-capacity alternative, or can be considered alongside Corsair's CX and RMe series if a lower wattage is sufficient for a given build