Corsair HX1000i (1000W) 80 Plus Platinum PSU ATX 3.0, PCIe 5.0 - CP-9020259-EU

This Corsair HX1000i is a high-end 1000W modular power supply with 80+ Platinum certification – aimed at serious gaming and workstation builds with powerful GPUs and many peripherals. It supports ATX 3.0 and PCIe Gen 5.0, so you are fully covered for modern and future graphics cards with a 12VHPWR connector. With efficiency of up to 92% at standard AC input 100 - 240V, you get stable operation and less loss under load. A large 140mm fan is also built-in, which handles cooling under serious load.

What you get

With a power of 1000W, this PSU easily handles a high-end CPU plus a powerful GPU, without worrying if it will be enough for overclocking or future upgrades. Thanks to ATX 3.0/PCIe Gen 5.0 support and the included 12VHPWR (12+4 pin) connector, you can directly power modern graphics cards without adapters and compromises in stability. The modular design allows you to connect only the necessary cables, which simplifies cable management and improves airflow in the case. With 2 x EPS (4+4), you can comfortably power even more serious motherboards with powerful VRMs, while the many PCIe, SATA, and Molex connectors are sufficient for several GPUs, SSDs, HDDs, and additional accessories. Active PFC and high efficiency lead to lower heating and a quieter fan during everyday use and gaming.

• Power 1000W – sufficient for high-end gaming or workstation configurations with powerful GPUs and many peripherals.
• 80+ Platinum certification – up to 92% efficiency, which means less loss, lower temperatures, and less noise from cooling.
• ATX 3.0 / PCIe Gen 5.0 support – readiness for the latest generation of graphics cards and stricter power supply requirements.
• 1 x 12VHPWR (12+4 pin) + 4 x PCIe 8-pin (6+2) – flexibility for one powerful or several more serious GPUs in one system.
• 2 x EPS 8-pin (4+4) – stable power for modern motherboards and strong multi-core processors.
• 8 x SATA and 8 x Molex – enough connectors for many SSDs, HDDs, fans, controllers, and accessories.
• Modular power supply with dimensions 180 x 150 x 86 mm – cleaner internal appearance and better airflow, especially in wider ATX cases.
• 140mm fan – large diameter for better cooling at lower speeds and quieter operation.
• Active PFC – more stable power supply and better use of the electrical network at input voltage 100–240 VAC.
• 120 months warranty – long-term peace of mind for a component that often outlives several upgrades.

Who it is suitable for

This power supply is suitable if you are planning a strong gaming build, streaming/video workstation, or configuration with high-end next-generation GPUs. It also suits people who want a long-term foundation for future upgrades and want to be ready for new PCIe 5.0 cards. If you are making a small budget build with low consumption, a 1000W Platinum PSU would be more of an unnecessary luxury.

The most sensible aspect of this model is the combination of 1000W power, 80+ Platinum efficiency, and ATX 3.0 / PCIe 5.0 support – you get a power supply that will not limit you even after several serious upgrades ahead.