Power supply Corsair RM850x 850W 80 Plus Gold ATX 3.1 PCIe 5.1 Fully Modular PSU - CP-9020270-EU

This power supply Corsair RM850x with 850W and 80+ Gold certification is a serious choice for mid to high-end gaming or workstation machines. It supports ATX 3.0/3.1 and PCIe Gen 5.0/5.1, so you are ready for a modern GPU with the new 12V-2x6 connector. The fully modular design gives you the freedom to use only the necessary cables and keep the case clean and organized. Additionally, the Cybenetics Gold certification confirms that efficiency and noise levels are very good.

What you get

With a power of 850W, you have enough headroom for a combination of a powerful CPU and serious GPU, plus several SSD/HDD and additional fans, without worrying about stability. The 80+ Gold certification and efficiency around 90% mean lower losses, less heat, and quieter operation under typical load. With one PCIe 12V-2x6 (12+4) and three PCIe 8-pin (6+2) connectors, you can comfortably power a modern graphics card, including those with higher power requirements. The eight SATA and three PATA connectors provide enough flexibility for many drives, fan hubs, and additional accessories. The large 140mm fan helps with better cooling at lower speeds, which reduces noise during everyday use.

• Power 850W – sufficient for modern gaming and workstation configurations with one powerful GPU and plenty of storage.
• 80+ Gold efficiency (~90%) – less heat loss, lower electricity consumption, and quieter operation under load.
• ATX 3.0/3.1 and PCIe Gen 5.0/5.1 support – ready for the new generation of graphics cards and stricter load standards.
• PCIe 12V-2x6 (12+4) x1 and PCIe 8-pin (6+2) x3 – flexible options for powering modern and older type GPUs without adapters.
• Fully modular design – all cables are separate, making cable management easier and improving airflow in the case.
• 140mm fan – larger fan for better cooling at lower speed and less noise.
• 120 months warranty – 10 years of coverage shows confidence in the reliability of the power supply in the long term.

Who it is suitable for

This PSU is suitable if you are assembling a strong gaming or productivity build with a modern graphics card and want to be prepared for several upgrades ahead. It is also a good choice for users who value quiet operation, stability, and a long warranty, without going into absurd overkill in terms of power. It is not the most logical option if you are making a completely budget configuration with low consumption, where 850W and this level of efficiency are an unnecessary expense.

The combination of 850W, 80+ Gold efficiency, ATX 3.1 / PCIe 5.1 support, and fully modular design makes Corsair RM850x a very balanced option for a serious build with perspective. The modern connectors and solid 10-year warranty stand out the most – things that will save you worries in the long term.