Corsair PSU HX1200i Fully Modular Ultra-Low Noise Platinum ATX 1200 Watt

The Corsair HXi Series HX1200i 1200W Fully Modular Ultra-Low Noise Platinum ATX Power Supply delivers exceptional Cybenetics Platinum-rated power with advanced digital monitoring and control, ready for modern systems with ATX 3.1 certification and PCIe 5.1 compliance. With dual native 12V-2x6 GPU power cables, fully modular Type 4 cabling, ultra-quiet 140mm fluid dynamic bearing fan, 105°C-rated 100% Japanese electrolytic capacitors, CORSAIR iCUE software compatibility for real-time monitoring and customization, and Modern Standby support, this flagship power supply provides consistent electrical performance with superior efficiency and minimal noise for high-end gaming, workstation, and enthusiast PCs.

Key Features:

>1200W continuous power output on a single +12V rail (100A) for stable, reliable performance >Intel ATX 3.1 certified for formal compliance with high reliability and power efficiency standards >PCIe 5.1 compatible with dual native 12V-2x6 (16-pin) connectors for modern and next-gen graphics cards >Supports 2x transient power excursions from GPU (600W per 12V-2x6 cable) >Ready for NVIDIA RTX 50-series GPUs including RTX 5090 with high power demands >Cybenetics Platinum efficiency rating at 230V (up to 91.5% efficiency) >Cybenetics Platinum efficiency rating at 115V (up to 89.7% efficiency) >80 PLUS Platinum certified for lower power consumption and cooler temperatures >Cybenetics A+ noise rating for exceptionally quiet operation (15-20 dBA average) >CORSAIR iCUE software compatible for real-time monitoring of voltages, temperatures, fan speed, power consumption, and efficiency >Create custom fan curves, monitor power settings, and toggle between single and multi-rail overcurrent protection via iCUE >Fully modular Type 4 cables allow you to connect only what you need for cleaner wiring and improved airflow >Ultra-flexible flat cables with low-profile design for sleek installation and easier cable management >140mm fluid dynamic bearing (FDB) fan with Zero RPM Mode for silent operation at low to medium loads >Thermally controlled fan adjusts speed based on load for optimal cooling and minimal noise >Built with 100% industrial-grade, 105°C-rated Japanese primary electrolytic capacitors for unwavering power and reliability >Robust design with highest quality components specially selected to reduce coil whine and electronic noise >Modern Standby support (Alternative Low Power Mode) with precise timings for fast wake-from-sleep >ATX form factor with compact design for compatibility with modern enthusiast cases >Comprehensive protection: Over Voltage, Under Voltage, Over Current, Over Power, Short Circuit, Over Temperature >100,000 hours MTBF (Mean Time Between Failures) for exceptional reliability >Industry-leading 10-year manufacturer warranty with world-class CORSAIR support

Technical Specifications:

Model Number	CP-9020281-NA (US, 2025 model), CP-9020307-NA / CP-9020307-IN (India), CP-9020070-NA (older model)
Internal Model	RPS0005 (older), Updated ATX 3.1 model (2025)
Brand	Corsair
Series	HXi Series (2025)
Color	Black
Wattage	1200W (Continuous Power)
Form Factor	ATX
ATX Version	ATX 3.1 (Certified), ATX12V v3.1 / ATX12V v2.4 (older model)
PCIe Version	PCIe 5.1 (Compatible), PCIe 5.0 (2025 model)
EPS Version	EPS 2.92
Efficiency Certification (230V)	Cybenetics Platinum (up to 91.5% efficiency)
Efficiency Certification (115V)	Cybenetics Platinum (up to 89.7% efficiency)
80 PLUS Certification	80 PLUS Platinum
Noise Rating	Cybenetics A+ (15-20 dBA average)
Modularity	Fully Modular
Cable Type	Type 4 (Ultra-flexible flat cables, low-profile design)
AC Input Voltage	100-240V (Auto-ranging)
AC Input Current	15A @ 100V / 7.5A @ 240V
Frequency	47-63Hz (50-60Hz)
Active PFC	Yes (>0.9)
+3.3V Rail	25A (150W combined with +5V)
+5V Rail	25A (150W combined with +3.3V)
+12V Rail	Single +12V rail, 100A (1200W)
+5Vsb Rail	3A / 3.6A (15W)
Cooling	140mm Fluid Dynamic Bearing (FDB) Fan (NR140HP, Thermally controlled)
Zero RPM Mode	Yes (Selectable, semi-passive operation, fan stops at low/medium loads)
Modern Standby	Yes (Alternative Low Power Mode support)
iCUE Software Compatible	Yes (Real-time monitoring, custom fan curves, rail configuration)
CORSAIR Link Support	Yes
MTBF	100,000 hours
Capacitor Rating	105°C-rated 100% Japanese Primary Electrolytic Capacitors
OEM Manufacturer	CWT (Channel Well Technology)
Operating Temperature	0-50°C (Continuous Full Load)
Multi-GPU Ready	Yes (SLI/CrossFire compatible)
Single/Multi-Rail Toggle	Yes (via iCUE software)

Connectors:

ATX 24-Pin Connector	1
EPS 4+4-Pin Connector	2 (2 separate cables)
PCIe 6+2-Pin Connector	4-5 (4-5 separate cables, or 8 total per older spec)
12V-2x6 PCIe 5.1 Connector (16-pin)	2 (Dual cables, 600W capable each, also called 12+2-pin)
SATA Connector	8-12 (Multiple cables)
PATA (Molex) Connector	8

Protection Features:

>Over Voltage Protection (OVP) >Under Voltage Protection (UVP) >Over Current Protection (OCP) - Single or Multi-rail selectable >Over Power Protection (OPP) >Short Circuit Protection (SCP) >Over Temperature Protection (OTP)

Dimensions & Weight:

Dimensions (L x W x H)	150mm x 86mm x 200mm (5.9" x 3.4" x 7.9")
Depth	200mm
Weight	4.4 kg (9.7 lbs)

Package Contents:

>CORSAIR HX1200i Power Supply Unit >Fully Modular Cable Set (Type 4): >1x ATX 24-Pin Cable >2x EPS 4+4-Pin Cables >4-5x PCIe 6+2-Pin Cables >2x 12V-2x6 PCIe 5.1 Cables (600W each, 2025 model) >Multiple SATA Power Cables >Multiple PATA (Molex) Power Cables >AC Power Cord >Cable Ties/Straps >Mounting Screws >User Manual >10-Year Warranty Card

Perfect for flagship enthusiast gaming PCs, professional workstations, extreme performance builds, multi-GPU setups, Intel Core i9/Core Ultra 9 and AMD Ryzen 9/Threadripper platforms, top-tier GPU builds (RTX 50/40-series including RTX 5090, RX 7000/8000-series), extreme overclocking systems, systems requiring ATX 3.1/PCIe 5.1 compliance with dual 12V-2x6 support, users who want real-time power monitoring and control, ultra-quiet high-performance builds, and anyone seeking flagship-tier reliable, efficient, fully modular power delivery with maximum headroom and digital monitoring capabilities. The Corsair HXi Series HX1200i is a flagship fully modular 1200W ATX power supply formally certified to meet the Intel ATX 3.1 compliance standard, ensuring the absolute highest level of reliability, power efficiency, and performance for modern and future demanding systems with advanced digital monitoring and control via CORSAIR iCUE software. With PCIe 5.1 compatibility and dual native 12V-2x6 (16-pin) connectors each capable of delivering 600W, the HX1200i is specifically designed to power the latest and upcoming flagship graphics cards including NVIDIA RTX 50-series (RTX 5090, RTX 5080) and RTX 40-series, as well as AMD RX 7000/8000-series GPUs, with full support for 2x transient power excursions that next-gen flagship and enthusiast cards demand—making this PSU 50 series ready for NVIDIA's newest super-expensive high-power GPUs. Cybenetics Platinum certification at both 230V (up to 91.5% efficiency) and 115V (up to 89.7% efficiency) delivers steady power output with exceptional efficiency, also earning 80 PLUS Platinum certification for significantly reduced power consumption from the wall (up to 92% efficiency at real-world loads), generating less heat, and lowering electricity costs over time—critical for 1200W systems running continuously under heavy workloads. The Cybenetics A+ noise rating ensures exceptionally quiet operation (15-20 dBA average noise output) thanks to the ultra-quiet 140mm fluid dynamic bearing (FDB) fan with Zero RPM Mode (selectable semi-passive operation) that stops completely at low to medium loads for silent computing when your system is idle or under light/medium use—providing virtually silent operation. The thermally controlled fan intelligently adjusts speed based on temperature and load, ramping up only when needed to maintain optimal cooling while keeping noise minimal even at full 1200W load. What sets the HXi Series apart is powerful CORSAIR iCUE software integration that enables you to monitor real-time voltages, temperatures, fan speed, power consumption, and efficiency in vivid detail, create custom fan curves for perfect balance between cooling and noise, monitor power settings across all rails, and toggle between single to multi-rail overcurrent protection for added flexibility and safety—giving you unprecedented control and visibility into your power supply's operation. Fully modular Type 4 flat cabling with ultra-flexible, low-profile design allows you to connect only the cables your system needs, dramatically reducing cable clutter inside your case and promoting better airflow for improved cooling while making installation sleek and cable management easier than ever, even in complex enthusiast builds with dual GPUs. Built with 100% industrial-grade, 105°C-rated Japanese primary electrolytic capacitors for unwavering power and reliability, the HX1200i uses the highest quality components specially selected to reduce coil whine and other electronic noise—ensuring it's quieter than most PSUs even when the fan isn't spinning. The robust design and premium components ensure long-term stability and dependable electrical performance even under sustained maximum loads, extreme overclocking scenarios, or simultaneous high-power GPU and CPU stress. Modern Standby support (Alternative Low Power Mode) with precise timings enables extremely fast wake-from-sleep times and better efficiency at low loads, perfect for workstations and systems that frequently sleep or hibernate. Compatible with both NVIDIA SLI and AMD CrossFire multi-GPU configurations. Comprehensive protection circuitry with configurable single or multi-rail OCP guards against over voltage, under voltage, over current, over power, short circuits, and over temperature conditions, protecting both the PSU and your valuable components. With a robust 100,000-hour MTBF (Mean Time Between Failures) rating and backed by CORSAIR's industry-leading 10-year warranty with world-class support, the HX1200i delivers absolute peace of mind and reliable performance for a decade through multiple builds and upgrades. At the premium price of $320-$344, this is Corsair's flagship digital PSU designed for users who demand the very best—tight voltage regulation, excellent ripple suppression, stable thermal management, digital monitoring, and virtually silent operation. Ideal for enthusiast builds with flagship CPUs and top-tier GPUs like RTX 5090, multi-GPU configurations, extreme overclocking, professional workstations, and users who want iCUE monitoring and control, the HX1200i provides abundant power headroom, exceptional quiet operation, Platinum efficiency, next-gen dual 12V-2x6 compatibility, and unmatched digital control. Upgrade to flagship-tier reliable, efficient, digitally-controlled, and ultra-quiet power with the Corsair HXi Series HX1200i.