Cooler Master MASTERWATT MAKER MIJ 1200W

A 1200W unit with 80+ Titanium efficiency certification and full cabling. 1200W covers a 300W+ flagship GPU plus a high-end CPU with margin to spare. 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.

Expect to pay around $25.04, which lands it among budget options. PlanMyPC's builder flags compatibility problems automatically and adds the part's price to your build total. Support and warranty service run through Cooler Master, with terms that vary by region. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.