The be quiet! Pure Power 13 M 1200W and the Corsair HX1200i are evenly matched across the majority of their technical specifications, resulting in an objective tie between the two power supply units. While both components offer identical performance in five key areas, the be quiet! Pure Power 13 M 1200W holds a 12% advantage in MSRP, whereas the Corsair HX1200i provides a 25% advantage in efficiency.

Choose the be quiet! Pure Power 13 M 1200W if your primary goal is to minimize the initial cost of your build. Conversely, select the Corsair HX1200i if you prioritize superior efficiency for your system. Both units provide the same core power capacity, so your final decision should rely on whether you value the lower purchase price of the former or the increased efficiency rating of the latter.