CORSAIR HX1200i 1200W 80 + Platinum ATX 3.1 Fully Modular Power Supply

The Corsair HX1200i is a 1200W fully modular power supply built to meet the demands of high-performance PC builds. Certified to the ATX 3.1 standard and PCIe 5.1, it includes a 12V-2×6 PCIe 5.1 cable that is compatible with modern graphics cards such as the NVIDIA GeForce RTX 40 Series and supports AMD Ryzen 7000 series platforms. Its fully modular design means you connect only the cables your system needs, keeping airflow clean and cable management straightforward. The HX1200i carries an 80 PLUS Platinum efficiency rating and is independently validated by Cybenetics at the Platinum efficiency tier with a Cybenetics Noise rating of A, indicating low acoustic output. At typical loads the unit delivers up to 92% efficiency, which translates to less heat generated inside your case and lower energy drawn from the wall during extended sessions. For cooling, Corsair uses a 140mm Fluid Dynamic Bearing fan that supports Zero RPM mode. At low to medium loads the fan stops spinning entirely, making the system near-silent when demands are modest. The fan only ramps up when thermal conditions require it, extending bearing life over time. As a fully digital power supply, the HX1200i minimises coil whine and delivers stable, clean power rails. It also supports Modern Standby sleep mode, enabling fast wake- sleep behaviour on compatible platforms. All primary electrolytic capacitors are 105°C-rated Japanese units, contributing to long-term reliability under sustained high loads. Verified Specifications: – Continuous power output: 1200 W – ATX version: ATX 3.1 (ATX12V 3.1) — formally certified – Efficiency rating: 80 PLUS Platinum; Cybenetics Platinum – Cybenetics Noise rating: A – Fan: 140mm Fluid Dynamic Bearing, Zero RPM mode supported – Capacitors: 100% Japanese 105°C-rated primary electrolytic – Modular: Fully modular, Type 4 cables – Connectors: 1× 24-pin ATX, 2× EPS12V, 4× PCIe, 8× SATA, PATA type B – PCIe cable included: 12V-2×6 PCIe 5.1 – Multi-GPU ready: Yes – MTBF: 100,000 hours – Warranty: 10 years – Weight: 4.4 kg – Part number: CP-9020307-IN