SeaSonic FOCUS Plus Platinum 550W

This is a 550W unit with 80+ Platinum efficiency certification and full cabling. 550W covers mainstream builds with a modest GPU. It uses the ATX form factor — confirm your case lists ATX support. Skimping on the PSU is a false economy; better efficiency ratings usually mean better components and longer warranties.

At $139.00 it sits in the high-end power supply bracket. Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Seasonic backs the product through its standard warranty channels; check the listing for region-specific terms. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.