Xigmatek Prime M 850W 80 Plus Gold PSU ATX 3.1 Full Modular

Xigmatek Prime M 850W is an ATX power supply from mid-range to high-end class, aimed at more serious gaming and productive systems with modern GPUs. With 850W power and 80+ Gold certification, you get stability and good efficiency up to 92% under typical load. The power supply is fully modular, allowing you to use only the necessary cables and keep cable management under control. Support for ATX 3.0/3.1 and PCIe Gen 5.0/5.1 makes it ready for modern and future graphics cards.

What you get: serious reserve power for CPU + GPU combinations, including smoother graphics cards, thanks to the PCI-E 5.1 connector and a total of 4 PCI-Express 6+2 pin. This gives you flexibility – from standard RTX/Radeon cards with 8-pin to newer models with 12VHPWR via PCI-E 5.1. With 8 SATA connectors and 4 Molex, you can easily connect SSDs, HDDs, fan hubs, and other peripherals without worrying about a shortage of outputs. Active PFC and DC to DC Converter Design help maintain more stable voltages on the 3.3/5/±12 V lines, which is important during sudden spikes in consumption during gaming or rendering. A built-in 120 mm fan keeps the power supply cool under load without generating excessive noise.

• Power 850W – sufficient for a strong gaming or workstation build with a powerful GPU and multi-core CPU.
• 80+ Gold certification and up to 92% efficiency – less energy loss and lower temperature inside the case.
• ATX 3.0/3.1 and PCIe Gen 5.0/5.1 support – readiness for current and next-generation graphics cards, including through the PCI-E 5.1 connector.
• Fully modular design – all cables are removable, making assembly, upgrades, and clean cable management easier.
• Rich set of connectors – 20+4 Pin ATX, 2 x 4+4 Pin ATX/EPS, 4 x PCI-Express 6+2 pin, 1 x PCI-E 5.1, 8 x SATA and 4 x Molex cover almost every configuration.
• Active PFC + DC to DC Converter Design – better stability of voltages under variable load and more reliable operation in the long term.
• 120 mm fan and black casing – balance between cooling and noise, plus a clean appearance in most cases.

This power supply is suitable if you aim for a serious gaming build, streaming, or productive machine with a modern graphics card and many storage devices. It also fits well for future upgrades if you plan to switch to a newer GPU with PCIe Gen 5.0/5.1 power supply. It is not the optimal choice only if you are building a purely budget system with low consumption, where 850W and ATX 3.1 simply will not be fully utilized.

The combination of 850W power, 80+ Gold efficiency, and fully modular ATX 3.1 design makes Xigmatek Prime M 850W a balanced choice for serious configurations with an eye on the next generations of hardware.