SeaSonic S12II 520W
Category: Power Supply
Manufacturer: Seasonic
Wattage: 520W
Efficiency: 80+ Bronze
Modular: non-modular
SeaSonic S12II 520W
Wattage
520W
Efficiency
80+ Bronze
Modular
non-modular
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Overview
This is a 520W unit with 80+ Bronze efficiency certification and non-modular cabling. It uses the ATX form factor — confirm your case lists ATX support. 520W covers mainstream builds with a modest GPU. 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. 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. Not sold on this particular power supply? Browse the category listing to line it up against similarly priced alternatives.
| Specification | Value |
|---|---|
| Modular | non-modular |
| Wattage | 520 W |
| Efficiency | 80+ Bronze |
| Form Factor | ATX |
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