Power Supply Seasonic FOCUS GX-850 White 850W 80 Plus Gold ATX 3.1 PCIe 5.1 Fully Modular PSU

Seasonic FOCUS GX-850 White is an 850W fully modular PSU in white color, aimed at more serious gaming and high-performance configurations. It relies on 80+ Gold certification and up to around 90% efficiency, which means less loss and lower temperature during actual operation. The power supply is based on the new ATX 3.0/3.1 with PCIe Gen 5.0/5.1 standard, so you are covered for modern graphics cards. Add the fully modular design and the large 135mm FDB fan, and you get a stable and quiet foundation for a serious build.

What you get

With real 850W you have enough reserve for a powerful CPU and high-end GPU without worrying if you are on the edge. The 12VHPWR (12+4) connector allows you to power new graphics cards directly via the PCIe 5.x standard, without the need for adapters and improvisations. The modular design helps you use only the necessary cables, which improves airflow and makes cable management easier, especially in cases with a transparent panel. The 135mm FDB fan is designed for quieter operation and longer life compared to standard sleeve-bearing solutions, especially under higher loads. Thanks to Active PFC and 80+ Gold efficiency, the power supply maintains more stable voltages and reduces excess heat and power consumption.

• Power 850W – sufficient for a strong gaming or workstation build with a powerful GPU and multi-core CPU, without reaching the limit of the power supply.
• 80+ Gold certification and around 90% efficiency – less loss in heat, lower electricity bills, and calmer operation of components under load.
• ATX 3.0/3.1 and PCIe Gen 5.0/5.1 support – compatibility with the latest standards for powering graphics cards and protection against sudden peak loads.
• 1 x 12VHPWR (12+4) Pin connector – readiness for modern high-end GPUs without the need for additional adapters and extra cable chaos.
• Fully modular design – all cables are detachable, giving you a cleaner interior, better airflow, and easier installation and maintenance.
• 135mm FDB fan – quieter and more reliable operation compared to standard fans, especially under prolonged load and higher temperatures.
• Rich set of connectors – 1 x 20+4 PIN, 2 x CPU 4+4 Pin, 3 x PCI-Express 6+2-pin, 8 x SATA and 3 x Molex, so you can connect many SSDs/HDDs and additional devices.
• White color and no RGB – perfect if you are aiming for a clean white build without a light “circus” and want a tighter, minimalist look.

Who is it suitable for

This power supply is suitable for mid-range to high-end gaming configurations, streaming, and content creation systems where you plan a powerful GPU and want ATX 3.1 and 12VHPWR support. It is also suitable for white-themed cases and systems where aesthetics matter, but you do not want RGB. If you are making an ultra-budget build or a minimal office machine, 850W and this class of PSU will likely be more than you need.

The most sensible thing here is the combination of 850W power, ATX 3.1 + 12VHPWR, and fully modular design in a white case – a stable, quiet, and future-oriented foundation for a serious gaming or creator PC.