Power supply Corsair RM1200e (2025) 1200W 80 Plus Gold ATX 3.1, PCIe 5.1 Fully Modular PSU - CP-9020258-EU

This Corsair RM1200e (2025) is a 1200W modular power supply of high quality, aimed at serious gaming and workstation configurations. You get 80+ Gold certification and up to 90% efficiency, which means less loss in heat and lower power consumption under load. The power supply is in a standard ATX format with a length of only 150 mm, making it convenient for more compact cases. Add to that the fact that it is ATX 3.0/3.1 - PCIe Gen 5.0/5.1 compatible, and you are ready for modern and future high-end GPU cards.

What you get is a PSU that easily handles powerful graphics cards and multi-core CPUs without breaking a sweat. 1200W gives you room for upgrades, overclocking, and several additional components (more drives, fans, capture cards) without worrying about the power supply limit. Thanks to 6 x PCI Express 6 + 2 Pin and 1 x PCI Express 16 Pin (12V-2x6), you have coverage for both classic and next-generation GPUs with PCIe 5.x connectors. The modular design allows you to use only the necessary cables, improving airflow and making assembly easier and neater. Active PFC and high efficiency help for more stable power supply under various input voltages (100 - 240 VAC).

• Power 1200W – sufficient for high-end GPUs, powerful CPUs, and multiple additional components without the risk of power shortage.
• 80+ Gold certification with up to 90% efficiency – less loss, lower consumption, and lower temperatures under load.
• ATX 3.0/3.1 and PCIe Gen 5.0/5.1 compatibility – readiness for the new generation of graphics cards via the PCI Express 16 Pin (12V-2x6) connector.
• Modular power supply unit – all cables are separate, making cable management easier and improving airflow in the case.
• Rich set of connectors – 7 x SATA, 4 x Molex, 6 x PCIe 6+2 Pin and ATX 24 Pin cover modern systems with many drives and peripherals.
• 120mm F.D.B. fan – quieter and more durable operation thanks to F.D.B. technology, suitable for long gaming sessions and 24/7 systems.
• Compact dimensions 150 x 150 x 86 mm – easy installation in most ATX cases, including shorter chassis, without hitting the HDD cage.
• 120 months warranty – long-term peace of mind for a lifetime of several generations of hardware.

It is suitable for gamers with high-end configurations, content creators with powerful GPUs and plenty of storage, as well as for people planning serious upgrades in the coming years. If you are building a more budget system with low power consumption, 1200W may be excessive, but for top graphics cards and heavy loads, this is exactly in the right class.

The combination of 1200W, 80+ Gold efficiency, and ATX 3.1 / PCIe 5.1 support makes this Corsair RM1200e (2025) a very stable foundation for a serious, long-term configuration. You get a PSU that will not bottleneck you with the next few generations of GPUs.