Power supply unit CORSAIR HX1200i 1200 W ATX 24-pin 80 PLUS Platinum, active cooling (140 mm), black

CORSAIR HX1200i is a 1200 W ATX power supply designed for high-performance desktop PCs. It delivers stable power with 80 PLUS Platinum efficiency and includes a 24‑pin motherboard connector, fully modular side-mounted connections, and a 140 mm active cooling fan. The unit incorporates an integrated iCUE LINK System Hub to detect and configure compatible cooling and lighting components and supports modern GPU and CPU power demands with a native 12V‑2x6 GPU power cable.

Advantages

The HX1200i combines high efficiency, digital power regulation, and extensive connectivity in a compact black housing. Side-mounted SHIFT connectors simplify cable routing and upgrades, while the integrated iCUE LINK hub centralizes control of up to 24 compatible devices. Native 12V-2x6 GPU power support and ATX 3.1 / PCIe 5.1 readiness ensure compatibility with current high-end graphics cards and CPUs. A fluid dynamic bearing fan with Zero RPM mode reduces acoustic output at low and medium loads.

Suitable for

• High-performance gaming PCs and enthusiast builds
• Workstations and content-creation systems with heavy GPU use
• Overclocked systems requiring stable, tightly regulated power
• Systems using multiple iCUE LINK cooling or lighting devices

When it may not be suitable

This power supply may be excessive for small office or basic home systems that do not require high wattage or advanced modular connectivity. If your build uses low-power components or a compact small-form-factor case with restricted space, consider a lower-wattage or SFX-format PSU that better matches those constraints.

Key specifications

• Total power: 1200 W
• Efficiency: 80 PLUS Platinum
• Form factor / connector: ATX, 24‑pin motherboard connector
• Fan: 140 mm active cooling, fluid dynamic bearing, Zero RPM mode
• Input voltage range: 100–240 V AC, 47–63 Hz
• Native GPU power cable: 12V‑2x6 (for high-end graphics cards)
• Capacitors: 100% Japanese electrolytic capacitors rated to 105°C
• Colour: Black
• Weight: 3.978 kg

How to use

Install the HX1200i into a compatible ATX case and connect the 24‑pin motherboard cable along with any required CPU and GPU power cables. Attach modular cables to the side-mounted SHIFT connectors for SATA, peripheral, and additional power outputs as needed. Use CORSAIR iCUE software to detect and configure connected iCUE LINK devices, adjust power and OCP settings, and monitor system status. Ensure the mains input matches the specified 100–240 V range before powering on.

What to consider before purchase

• Ensure your chassis supports an ATX power supply and has room for a 140 mm fan housing
• Confirm your GPU and CPU power requirements and cable compatibility
• Check that you plan to use or benefit from iCUE LINK devices and modular side-mounted connections
• Verify that 1200 W capacity matches peak system power draw with headroom for upgrades

Recommendations

For best results, pair the HX1200i with high-efficiency components, keep airflow unobstructed in the case, and use iCUE to monitor power delivery and control connected cooling or lighting devices. Allow some power margin above measured peak load to maintain stability and longevity.