This article covers CORSAIR HX1200i (2025) 完全モジュラー超低ノイズATX電源 12V-2x6ケーブル付き.

Overview

The CORSAIR HX1200i (2025) is a 1200W fully modular ATX power supply built for high-end systems. It meets the latest ATX 3.1 and PCIe 5.1 standards, featuring a native 12V-2x6 connector that can deliver up to 600W to next-generation graphics cards. With Cybenetics Platinum efficiency and a 140mm fluid dynamic bearing fan, it balances performance with near-silent operation. The included iCUE software allows detailed monitoring of power draw, fan curves, and switching between single-rail and multi-rail OCP on the fly.

Compatibility Guide

The HX1200i follows the standard ATX form factor, so it fits in virtually any ATX-compatible case. Its 140mm depth (shorter than many 160mm PSUs) provides extra cable management room. The connector set includes a 24-pin ATX, dual EPS 4+4-pin, the new 12V-2x6 600W connector, multiple 6+2 PCIe, SATA, and Molex connectors. This makes it ideal for flagship builds with an RTX 4090/5090 and a high-core CPU. Ensure your case has at least 140mm PSU clearance; most mid-tower and full-tower cases will accommodate it without issue.

Product Info

Released in 2025, the CORSAIR HX1200i sits firmly in the high-end PSU tier. It carries Cybenetics Platinum certification for efficiency and comes with a 10-year warranty. The fully modular design lets you use only the cables you need, reducing clutter. Key specs: 1200W continuous output, ATX 3.1 & PCIe 5.1 compliance, 140mm FDB fan with zero-RPM mode, and full digital control via iCUE. Japanese 105°C-rated capacitors ensure long-term reliability. It is available through major retailers and Corsair's own store.

Best Use Cases

① Enthusiast gaming rigs: If you're pairing an RTX 4090 (or newer 5090) with a Core i9-14900K or Ryzen 9 7950X, the 1200W headroom ensures stable power delivery even under transient spikes. The single 12V-2x6 cable simplifies GPU cabling.
② Professional workstation builds: For dual-GPU setups, heavy storage arrays, or rendering workstations running 24/7, the HX1200i provides steady, clean power across all rails.
③ Silent PC builders: The zero-RPM fan mode keeps the PSU completely silent under light loads. At higher loads, the 140mm FDB fan remains very quiet, making it suitable for recording studios or home theaters.
④ Long-term investment buyers: With a 10-year warranty and robust internal components, this PSU can outlast several system upgrades. It is ATX 3.1 ready for the next generation of hardware.

Things to Consider

1200W is overkill for most standard gaming PCs. A 750W or 850W unit is sufficient for a mid-range build. Additionally, the HX1200i commands a premium price; if you don't need the headroom or iCUE features, a simpler PSU like the Corsair RM850x might be more cost-effective. Also, using iCUE requires a free USB 2.0 header on the motherboard. Finally, some very compact cases (e.g., SFF cases like the Dan A4) do not support standard ATX PSUs; this unit will not fit there.

FAQ

Q: Does this PSU work with GeForce RTX 5090?
A: Yes. It includes a native 12V-2x6 connector compliant with PCIe 5.1, designed for the RTX 5090's power demands. The connector can deliver up to 600W, covering the card's peak draw.
Q: Can I use this power supply without installing iCUE software?
A: Absolutely. The PSU functions perfectly out of the box with default fan and protection settings. iCUE is optional for advanced monitoring and customization.
Q: How does the 2025 HX1200i compare to the previous generation?
A: The key upgrade is native ATX 3.1 support, including the 12V-2x6 connector. It also features improved transient response and updated iCUE software with rail switching.

Product Disclosure (Amazon)

  • Manufacturer: CORSAIR
  • ASIN: B0F3JJYXDP
  • Note: This article covers a manufacturer-made product based on Amazon listing details.