Corsair HX1200i 80 Plus Platinum SMPS

The Corsair HX1200i is a 1200-watt, 80 Plus Platinum-rated power supply designed for high-performance desktop builds that demand stable, efficient power delivery. Its fully modular cable design means every cable — including the main ATX harness — is detachable, so you can connect only the cables your system actually needs. This keeps your chassis interior tidy, improves airflow, and simplifies future upgrades or maintenance. The 80 Plus Platinum efficiency rating indicates the unit delivers power at high efficiency across a wide range of loads, reducing heat output and lowering operating costs compared to lower-rated supplies. For multi-GPU workstations, high-core-count processors, or heavily overclocked gaming rigs that draw sustained loads well above 800 watts, the 1200-watt headroom provides a meaningful safety margin without pushing the unit close to its limits. The HX1200i belongs to Corsair's premium HX series, which is known for using a single high-amperage +12 V rail topology. This architecture can simplify power delivery to modern GPUs and CPUs, which draw the bulk of their current from the +12 V rail. Verifiable Specifications: • Model: HX1200i • SKU: CP-9020070-UK • GTIN / EAN-UPC: 843591038386 • Brand: Corsair • Rated Output: 1200 W • Efficiency Certification: 80 Plus Platinum • Modular Configuration: Fully Modular • Form Factor: ATX (standard desktop) If you are also considering related Corsair power supplies, the Corsair AX1600i offers a higher 1600 W output, while the Corsair SF1000 delivers 1000 W in the compact SFX form factor for small-form-factor cases. For mid-range systems, the Corsair RM1000e and RM850e provide fully modular options at lower wattages. Check compatibility with your case, CPU, and GPU TDP before purchasing to ensure 1200 W is the appropriate tier for your build