SeaSonic S12III 650W

A 650W unit with 80+ Bronze efficiency certification and non-modular cabling. 650W covers a 220–300W GPU and a midrange CPU comfortably. It uses the ATX form factor — confirm your case lists ATX support. A dependable power supply protects everything downstream, and efficiency tiers are a decent proxy for overall build quality.

Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Support and warranty service run through Seasonic, with terms that vary by region. Every published spec is tabulated below, and compatibility against your current part list is checked automatically.