About Corsair HX1000i Fully Modular Ultra-Low Noise PSU
| Attribute | Specification / Details |
|---|---|
| Model / SKU | CP-9020259-NA |
| Total Continuous Power | 1000 W |
| Output Voltage & Rails | +12 V rail: up to 83.3 A (≈ 999.6 W), +3.3 V & +5 V combined: up to 150 W, +5VSB: 15 W |
| Efficiency / Certification | 80 PLUS Platinum; Certified efficiency up to ~92% |
| Cooling Fan & Bearing | 140 mm, Fluid Dynamic Bearing fan |
| Noise / Fan Mode | “Zero RPM Mode” — fan can stop under low to medium load for silent operation |
| Modular Cabling / Connectors | Fully modular; multiple connectors including ATX 24-pin, EPS/CPU (2 × 8-pin), PCIe (6+2-pin and 12VHPWR), SATA, Molex, etc. |
| ATX / PCIe Standards | ATX 3.1 & PCIe 5.1 (supports modern GPU power requirements) |
| Capacitors & Build Quality | 100% Japanese electrolytic capacitors rated for 105 °C |
| Protections & PSU Features | Digital PSU platform, active PFC, protections (OVP/UVP/OPP/short-circuit, etc.) — stable & clean power delivery under load |
| MTBF / Reliability | Mean Time Between Failures: approx. 100,000 hours |
| Warranty | 10 years manufacturer warranty |
| Form Factor / Compatibility | ATX form factor; suitable for high-end gaming PCs, workstations, multi-GPU or high-power builds |
Built to handle 1000 W of continuous power, it is designed for gamers, content creators, overclockers, and power users who demand reliability under heavy load.
At its core, the HX1000i delivers a robust, single +12 V rail output of up to ~999.6 W, making it more than capable of supporting high-end components — from the latest multi-core CPUs to graphics cards requiring PCIe 5.1 / 12VHPWR connectors, plus multiple drives and peripherals. Alongside this raw power, the unit offers 80 PLUS Platinum efficiency — meaning up to ~92% of input power is converted to usable DC power. This efficiency translates to lower energy waste, less heat generation, and quieter operation overall.
Reliability is built in from the ground up: 100% Japanese 105 °C-rated electrolytic capacitors ensure long-term stability and durability even under sustained high temperatures. The internal design, featuring a fully digital power architecture with active PFC and multiple protections (over-voltage, under-voltage, over-power, short-circuit, and more), ensures your components receive clean, consistent power without fluctuations or spikes that could impact performance or lifespan.
A major advantage of the HX1000i is its fully modular cabling. All cables (ATX, EPS/CPU, PCIe, SATA, Molex) are detachable — allowing you to use only the cables your build actually needs. This not only reduces clutter inside your case but also improves airflow and makes cable management simpler. Included are connectors for modern high-power devices: traditional PCIe 6+2 pin, as well as a 12VHPWR PCIe 5.1-compatible cable for next-generation GPUs — future-proofing your system for upgrades.
Despite delivering high wattage, the HX1000i maintains low noise levels through intelligent cooling. A 140 mm fluid-dynamic-bearing fan with “Zero RPM mode” stays off under light to medium load, rendering the PSU nearly silent during idle or typical workloads. When load increases, the fan spins up smoothly to provide adequate cooling — balancing acoustics and thermal performance. This makes HX1000i especially appealing for builds where silence matters: media editing rigs, home studios, living-room PCs, or any environment where noise is a concern.
For enthusiasts who like control and monitoring, HX1000i offers a digital platform with optional integration into system-monitoring software. With compatible software tools, you can monitor real-time power draw, efficiency, fan speed, and other metrics — giving insight into your system’s power consumption and allowing for fine-tuned fan and rail management. This level of transparency is rare among PSUs and can be valuable for overclocking, power-hungry workloads, or ensuring long-term stability.
Physically, the unit uses an ATX form factor and meets ATX 3.1 standards — ensuring compatibility across a wide range of modern motherboards and cases. Its compact size and modular design make installation easier, and the inclusion of high-quality cables (flat, sleeved, black) helps maintain a clean build aesthetic.
Finally, Corsair backs the HX1000i with a 10-year warranty, reflecting confidence in its build quality and reliability. Whether you are building a top-tier gaming PC, a workstation for rendering/3D work, a multi-GPU setup, or an overclocked enthusiast rig — the HX1000i stands out as a premium power supply that offers power, efficiency, silence, flexibility and long-term durability.
In short: the Corsair HX1000i is more than just a PSU — it’s a foundation for demanding, future-proof PC builds. If you want a power supply that delivers strong wattage, clean and efficient output, minimal noise, and maximum flexibility for high-end hardware — this PSU is a top-tier choice.
