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The CORSAIR HX1200i is a fully modular ATX 3.1 power supply delivering 80 PLUS Platinum efficiency, low-noise FDB fan, and iCUE software control for premium builds.
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Categories : Series
SKU : POR-SER-396
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Meet the CORSAIR HX1200i, a flagship ATX 3.1 power supply from the HXi Series, engineered for ultra-low noise and exceptional 80 PLUS Platinum efficiency. This 1200W fully modular PSU is built to power today's most demanding PCs, offering the stability and headroom needed for high-core-count CPUs and flagship GPUs. Its digital platform works with CORSAIR iCUE software, giving you real-time monitoring, custom fan curves, and on-the-fly switching between single and multi-rail OCP.
The HX1200i ships with all cables detachable, so you connect only what your system actually needs. That means less clutter, better airflow, and a cleaner internal layout—essential for both showcase builds and practical, serviceable rigs. Corsair includes a comprehensive cable set, including native 12VHPWR for the latest GPUs.
As one of the first power supplies certified for Intel ATX 3.1, the HX1200i meets the new power delivery standard, supporting PCIe Gen 5.1 platforms and resisting transient power spikes. Whether you're running a multi-GPU workstation or pushing a high-end gaming PC, this PSU delivers rock-solid power that your components can rely on.
Equipped with a 140mm Fluid Dynamic Bearing (FDB) fan, the HX1200i stays whisper-quiet even under load. In Zero RPM Fan Mode, the fan completely stops at low and medium loads for true near-silent operation—ideal for content creators who record audio or anyone who values a quiet workspace.
Using iCUE, you can create custom fan curves, monitor total power draw and efficiency, and toggle between single and multi-rail overcurrent protection in real time. All powered by a fully digital platform that gives you control far beyond standard PSUs. Japanese 105°C-rated electrolytic capacitors ensure long-term reliability, so the HX1200i is built to last for years of peak performance.
If you're building a high-end gaming PC, a content creation workstation, or a powerful home server, the CORSAIR HX1200i is the intelligent choice. It combines robust construction, advanced features, and a 10-year warranty—backing your investment with peace of mind.
Fully modular cabling: Connect only necessary cables for cleaner builds and better airflow.
80 PLUS Platinum efficiency: Reduces heat and power waste, saving energy over time.
iCUE software integration: Real-time power monitoring, custom fan curves, and single/multi-rail OCP switching.
Fan: 140mm Fluid Dynamic Bearing
Color: Black
Model: HX1200i
Weight: N/A
Modular: Fully Modular
Wattage: 1200W
Compliance: Intel ATX 3.1, PCIe Gen 5.1
Efficiency: 80 PLUS Platinum
Form Factor: ATX
Product Type: ATX Power Supply
Package Contents: HX1200i PSU, power cable, modular cables, user manual
Software Support: CORSAIR iCUE
Seller: PortSide Gear
MPN: HX1200i
The HX1200i's fully digital design uses an active bridge and LLC resonant converter, achieving high efficiency across a wide range of loads. An integrated DSP provides fast, accurate responses to power demands, ensuring stable voltage even during extreme GPU spikes. This digital engine also drives iCUE's telemetry, giving you detailed graphs of wattage, temperature, and efficiency. For those who want to push their overclocks, the PSU's single-rail mode delivers full wattage to one 12V rail, while multi-rail mode provides independent protection for each component group. This is a power supply that adapts to your system, your workload, and your noise tolerance—making it a smart investment for any serious builder.
Yes, the HX1200i is ATX 3.1 compliant and includes native 12VHPWR support for PCIe Gen 5.1 GPUs, making it fully compatible with RTX 40-series and future graphics cards.
Yes, the HX1200i has a Zero RPM Fan Mode that stops the fan entirely at low and medium loads. You can control this via iCUE software.
Simply connect the PSU's USB cable to your motherboard, install CORSAIR iCUE software, and it will recognize the PSU automatically. From there you can adjust fan curves, monitor power, and change OCP modes.
The HX1200i is overkill for my setup, but I love it. The iCUE integration is cool—I can monitor power draw and customize fan curves. Plus, it's completely silent.
I don't think I'll need another PSU for years. The 1200W is plenty for my 4090 and i9, and the Platinum efficiency keeps things cool. The packaging was great, and the cables are high quality.
The PSU itself is fantastic, but the iCUE software sometimes fails to recognize it. A reboot fixes it, but it's a bit annoying. Otherwise, the silent operation and power delivery are top notch.
This PSU is amazing. My PC is whisper quiet, and the fan never spins up during normal use. The iCUE monitoring is a nice bonus. Highly recommend for high-end builds.
It works, but the iCUE integration feels gimmicky. The PSU itself is good, but you're paying a premium for the software. If you don't need iCUE, there are cheaper options.
I've built many PCs, and this is the best power supply I've used. The cables are easy to route, the build quality is superb, and the 10-year warranty is great. Plus, iCUE lets me keep an eye on my system's power draw.
Only issue is the price. But if you want a reliable, quiet, and efficient PSU with software control, this is it. The ATX 3.1 is future-proof and the included 12VHPWR cable is great for 40 series GPUs.
