SeaSonic S12III 450W
Category: Power Supply
Manufacturer: Seasonic
Wattage: 450W
Efficiency: 80+ Bronze
Modular: non-modular
SeaSonic S12III 450W
Wattage
450W
Efficiency
80+ Bronze
Modular
non-modular
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Overview
A 450W unit with 80+ Bronze efficiency certification and non-modular cabling. 450W covers mainstream builds with a modest GPU. It uses the ATX form factor — confirm your case lists ATX support. Power supplies are the wrong place to cut corners — efficiency certification correlates with build quality and warranty length.
Drop it into the PlanMyPC builder to check compatibility with the rest of your parts. Support and warranty service run through Seasonic, with terms that vary by region. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build.
| Specification | Value |
|---|---|
| Modular | non-modular |
| Wattage | 450 W |
| Efficiency | 80+ Bronze |
| Form Factor | ATX |
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