Silverstone SX-G 700W

A 700W unit with 80+ Gold efficiency certification and full cabling. 700W covers a 220–300W GPU and a midrange CPU comfortably. It uses the SFX form factor — confirm your case lists SFX support. Skimping on the PSU is a false economy; better efficiency ratings usually mean better components and longer warranties.

At $187.22 it sits in the high-end power supply bracket. Use the PlanMyPC system builder to verify it works alongside your other components and to keep a running tally of the cost. Warranty coverage follows Silverstone's standard policy — confirm regional terms on the listing. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.