Seasonic Vertex GX-850 850 W power supply

850 W ATX 3.0 power supply

This 850 W unit follows the ATX 3.0 standard and includes a 16-pin 12VHPWR cable for PCIe 5.0 graphics cards. It is fully modular and uses a 135 mm fluid dynamic bearing fan with hybrid silent control. Japanese 105 °C capacitors and tight voltage regulation support stable delivery.

Suited for single-GPU builds, not multi-GPU

Builders assembling a high-performance system with one modern GPU will find the 850 W capacity and single 12VHPWR connector a direct match. The fully modular design keeps cable routing clean. Systems that require two or more 12VHPWR connections, or that need more than 850 W for extreme overclocking, should look at a higher-wattage or multi-connector unit.

One 12VHPWR cable included

The box provides a single 16-pin Gen 5 PCIe cable (12VHPWR) for the graphics card. If your GPU requires two such connectors, or if you plan to run dual cards each needing 12VHPWR, this unit cannot supply them natively.