This article covers CORSAIR HX1200i 完全モジュラー超低ノイズATX電源.

Overview

The CORSAIR HX1200i is a flagship fully modular power supply from the HXi series, delivering 1200W of continuous power with 80 PLUS Platinum efficiency (up to 92%). It is certified for Intel ATX 3.1, ensuring compatibility with the latest PCIe Gen 5.1 graphics cards and handling transient power spikes with ease. A 140mm fluid dynamic bearing (FDB) fan provides near-silent operation, and the Zero RPM mode stops the fan entirely under low to moderate loads. Integration with CORSAIR iCUE software allows real-time monitoring, custom fan curves, and on-the-fly switching between single-rail and multi-rail overcurrent protection (OCP). This power supply is designed for high-end gaming rigs, multi-GPU workstations, and enthusiast builds that demand rock‑stable power delivery. The included 12V‑2x6 (12VHPWR) cable supports up to 600W, making it ready for the most power-hungry graphics cards available today and in the foreseeable future. A 10‑year warranty underscores CORSAIR‘s confidence in long-term reliability.

Compatibility Guide

The HX1200i uses the standard ATX form factor (150mm × 180mm × 86mm) and fits most mid‑tower and full‑tower cases. All cables are fully modular, keeping your build clean. Key connector inventory: 1× Main ATX 24‑pin 2× EPS12V 4+4‑pin (CPU) 6× PCIe 6+2‑pin (GPU) 1× 12V‑2x6 (12VHPWR) cable 12× SATA power connectors 3× 4‑pin Molex * 1× FDD adapter Single‑rail mode provides up to 120A on a single +12V rail, while multi‑rail mode splits it into four 30A rails for added safety against short circuits. The switch is performed via iCUE software. Two EPS12V connectors ensure compatibility with high‑end motherboards that require dual CPU power.

Product Info

The CORSAIR HX1200i is positioned firmly in the high‑end tier of the power supply market. Its 80 PLUS Platinum certification and ATX 3.1 compliance place it alongside the best units for overclockers and power users. Launched in spring 2024, it retails for around ¥100,000–¥110,000 in Japan ($700–$800 USD). The 10‑year warranty and advanced digital control via iCUE justify the premium price for those who need maximum stability and flexibility.

Best Use Cases

High‑end gaming: Perfect for systems with an RTX 4090/5090 or dual‑GPU setups. The ATX 3.1 rated 12V‑2x6 connector delivers clean power even under transient loads. Content creation workstations: CPU‑heavy rendering tasks combined with powerful GPUs draw significant power; 1200W provides headroom for sustained all‑core workloads without fan noise becoming intrusive. Future‑proof builders: A top‑tier PSU can outlast two or three system builds. The HX1200i’s 10‑year warranty and support for next‑gen connectors make it a sensible long‑term investment.

Things to Consider

A 1200W unit is overkill for single‑GPU mid‑range builds (e.g., RTX 4070 or RX 7800 XT). In those cases, the HX850i or HX1000i would offer better value. At 180mm depth, the HX1200i may not fit compact cases – always check your case’s PSU clearance before purchase. The unit relies on iCUE for advanced features like rail switching and monitoring; without iCUE it still works perfectly as a standard Platinum PSU, but you lose software‑side flexibility. Competitors such as the Seasonic Prime TX‑1200 and be quiet! Dark Power 13 1200W offer similar hardware, but the HX1200i‘s iCUE integration gives it a unique edge for CORSAIR ecosystem users.

Product Disclosure (Amazon)

  • Manufacturer: CORSAIR
  • Seller: Aulani Store★パソコン製品のキーボードはUS配列です★
  • Fulfilled by: Aulani Store★パソコン製品のキーボードはUS配列です★
  • ASIN: B0CTR6PK19
  • Note: This article covers a manufacturer-made product based on Amazon listing details.