SeaSonic S12III 550W
Category: Power Supply
Manufacturer: Seasonic
Wattage: 550W
Efficiency: 80+ Bronze
Modular: non-modular
Price: $139.00 from Newegg
SeaSonic S12III 550W
Wattage
550W
Efficiency
80+ Bronze
Modular
non-modular
Best price from Newegg
$139.00
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Overview
A 550W unit with 80+ Bronze efficiency certification and non-modular cabling. It uses the ATX form factor — confirm your case lists ATX support. 550W covers mainstream builds with a modest GPU. Power supplies are the wrong place to cut corners — efficiency certification correlates with build quality and warranty length.
Its $139.00 price tag places it squarely in high-end territory. PlanMyPC's builder flags compatibility problems automatically and tracks the latest power supply deals from multiple stores. Seasonic backs the product through its standard warranty channels; check the listing for region-specific terms. Every published spec is tabulated below, and compatibility against your current part list is checked automatically.
| Specification | Value |
|---|---|
| Modular | non-modular |
| Wattage | 550 W |
| Efficiency | 80+ Bronze |
| Form Factor | ATX |
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