Athena Power AP-P4ATX55FEC 550W

A 550W unit with 80+ efficiency certification and non-modular cabling. 550W 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.

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 Athena, 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.