Seasonic GX-850 850W CORE (V2) GX ATX 3.1 80+ Gold PSU CORE V2 GX ATX 3.1

The updated Seasonic CORE GX ATX 3.1 Series complies with the latest ATX 3.1 and PCIe 5.1 standards.

Catering to a broad spectrum of PC enthusiasts and system builders, these power supplies provide a fine balance between cost and performance. 

The 80 PLUS® Gold certified Seasonic’s Core GX line is a fully modular design equipped with black cables featuring a braided pattern.

These power supplies are solid performers for a large range of applications, where a 120mm Hydro Dynamic Bearing fan is combined with Seasonic’s Smart and Silent Fan Control

to ensure the optimal cooling performance at the lowest possible noise level.

Optimized for PCIe 5.1 GPUs

The CORE GX ATX 3.1 power supply features a native 12V-2x6 cable designed for the latest PCIe 5.1 graphics cards.

With support for up to 600W, this cable ensures safe and stable performance for NVIDIA RTX 40 and 50 Series and future GPUs.

Enjoy a clean, efficient setup that’s fully compliant with ATX 3.1 and PCIe 5.1 standards.

• Fully compliant with PCIe 5.1 and ATX 3.1 standards.

• Up to 600W of power delivery.

• Future-ready while still supporting existing hardware.

Full Support for Legacy GPUs

To ensure compatibility with older GPUs, the CORE GX ATX 3.1 includes a 12V-2x6 to 2× 8-pin PCIe adapter cable.

It delivers reliable power up and works seamlessly with graphics cards from previous generations.

This cable makes it easy to upgrade your PSU without changing your GPU—perfect for users who want next-gen power with legacy support.

• Converts 12V-2x6 output to 2× 8-pin PCIe inputs.

• Ideal for graphics cards from previous generations.

• Easy to install for users upgrading from older systems.