SeaSonic SS-300SFD 300W

This is a 300W unit with 80+ efficiency certification and non-modular cabling. It uses the SFX form factor — confirm your case lists SFX support. 300W covers mainstream builds with a modest GPU. Skimping on the PSU is a false economy; better efficiency ratings usually mean better components and longer warranties.

PlanMyPC's builder flags compatibility problems automatically and tracks the latest power supply deals from multiple stores. 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.