CoolMax CUL-750B 750W

This is a 750W unit with 80+ efficiency certification and semi cabling. It uses the ATX form factor — confirm your case lists ATX support. 750W covers a 220–300W GPU and a midrange CPU comfortably. Power supplies are the wrong place to cut corners — efficiency certification correlates with build quality and warranty length.

Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current power supply prices across retailers. Support and warranty service run through CoolMax, 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.