Corsair HX1000i 1000 Watt ATX 3.0 80 Plus Platinum SMPS

The Corsair HX1000i is a fully modular, high-performance power supply designed to meet the demands of modern high-end PC builds. With a rated output of 1000 Watts and ATX 3.0 compliance, it delivers stable, clean power to platforms built around NVIDIA RTX 4000 series graphics cards and AMD Ryzen 7000 series processors, supporting the latest PCIe 5.0 power connector requirements inherent to ATX 3.0. Achieving 80 Plus Platinum certification, the HX1000i operates at high efficiency levels across a wide load range, reducing wasted heat output and helping keep your system cooler and quieter. The fully modular cable design means you only connect the cables your build actually requires, improving airflow inside the chassis and simplifying cable management during installation. A standout feature of the HX1000i is its Fluid Dynamic Bearing (FDB) fan paired with a Zero RPM mode. Under light to moderate loads the fan stops spinning entirely, resulting in completely silent operation — the fan only spins up when thermal conditions require active cooling. This makes the unit well suited to workstations or gaming rigs where acoustic comfort is a priority. The HX series has long been positioned as Corsair's premium enthusiast power supply line, and the HX1000i continues that tradition with a focus on voltage regulation, ripple suppression, and long-term reliability for demanding workloads such as content creation, high-refresh-rate gaming, and multi-GPU or compute-adjacent configurations. **Verified Specifications** - Rated output: 1000 Watts - ATX version: ATX 3.0 - Efficiency rating: 80 Plus Platinum - Modular type: Fully Modular - Fan bearing: Fluid Dynamic Bearing (FDB) - Fan mode: Zero RPM mode (passive at low/moderate load) - GPU compatibility: NVIDIA RTX 4000 series, AMD Ryzen 7000 series platforms - SKU / Part number: CP-9020259-IN - GTIN / EAN-UPC: 840006697305 - Form factor: ATX