The CORSAIR HX1200i Fully Modular Ultra-Low Noise Platinum ATX 1200W Power Supply, Black is a high-performance digital power supply designed for gaming systems and professional PC builds that require stable, efficient power delivery.
Built according to the ATX 3.1 power supply standard, the HX1200i provides reliable power for modern high-end hardware including next-generation graphics cards and multi-core processors. The power supply includes a 12V-2x6 PCIe cable, allowing compatibility with modern graphics cards that require higher power delivery.
The unit features a fully modular cable design, enabling users to connect only the cables they need. This improves airflow inside the system and simplifies cable management during installation.
The HX1200i is certified with 80 PLUS Platinum efficiency, delivering up to 92% efficiency under typical loads. This reduces power loss, lowers heat output, and improves long-term reliability.
For quiet operation, the power supply uses a 140mm fluid dynamic bearing fan with Zero RPM mode. The fan stops spinning during low and medium loads, providing near-silent operation during normal system usage.
The HX1200i is also equipped with 100% Japanese 105°C-rated capacitors, ensuring consistent voltage stability and long-term durability even under heavy workloads.
Through the CORSAIR iCUE software, users can monitor power output, adjust fan performance, and switch between single-rail and multi-rail modes directly from the desktop.
Key Features
• 1200-watt fully modular digital power supply
• ATX 3.1 certified for modern high-performance systems
• 80 PLUS Platinum efficiency rating
• Up to 92% power efficiency under typical loads
• Includes PCIe 12V-2x6 cable for modern graphics cards
• 140mm fluid dynamic bearing cooling fan
• Zero RPM mode for silent operation at low loads
• Built with 100% Japanese 105°C capacitors
• Digital monitoring and control through software
• 10-year manufacturer warranty
Technical Specifications
General
| Specification | Details |
|---|---|
| Product Name | HX1200i |
| Power Output | 1200 Watts |
| Power Supply Type | Fully Modular Digital PSU |
| Form Factor | ATX |
| Color | Black |
| Weight | 4.4 kg |
| Warranty | 10 Years |
Power Efficiency
| Specification | Details |
|---|---|
| Efficiency Certification | 80 PLUS Platinum |
| Maximum Efficiency | Up to 92% |
| Noise Certification | Cybenetics A |
High efficiency reduces power loss, heat generation, and overall energy consumption.
Cooling System
| Specification | Details |
|---|---|
| Fan Size | 140 mm |
| Fan Bearing | Fluid Dynamic Bearing |
| Zero RPM Mode | Supported |
The fan remains off during low and moderate loads to maintain quiet operation.
Electrical Specifications
| Output Rail | Maximum Current | Maximum Power |
|---|---|---|
| +3.3V | 25A | 150W |
| +5V | 25A | — |
| +12V | 100A | 1200W |
| +5VSB | 3A | 15W |
Total continuous power output is 1200 watts.
AC Input
| Specification | Details |
|---|---|
| Input Voltage | 100 – 240V |
| Input Current | 15A – 7.5A |
| Frequency | 47 – 63 Hz |
Connectors
| Connector Type | Quantity |
|---|---|
| ATX 24-Pin | 1 |
| CPU Power (4+4 Pin) | 2 |
| PCIe (6+2 Pin) | 4 |
| PCIe 12V-2x6 | 1 |
| SATA | 8 |
| Peripheral 4-Pin | 8 |
| USB Monitoring Cable | 1 |
Reliability
| Specification | Details |
|---|---|
| Mean Time Between Failures | 100,000 Hours |
| Capacitors | 100% Japanese 105°C Rated |
These components ensure stable operation and long-term durability.
User Experience
The CORSAIR HX1200i Fully Modular Ultra-Low Noise Platinum ATX 1200W Power Supply, Black provides stable and efficient power delivery for high-end gaming systems and professional workstation builds.
The fully modular cable system simplifies installation and improves airflow, while the Zero RPM cooling design ensures quiet operation during light workloads. With high efficiency, digital monitoring support, and long-life components, the power supply is built for reliable performance in demanding systems.
Included Items
• CORSAIR HX1200i power supply unit
• Fully modular power cables
• PCIe 12V-2x6 graphics card cable
• USB monitoring cable
• Mounting screws
• User manual and documentation
