The Corsair HX1200i and the Corsair HX1500i are tied in this objective comparison, as both units share identical specifications across seven of the nine measured categories. The primary differentiator between these power supplies is their specific area of superiority. The Corsair HX1200i holds a 26% advantage in MSRP, making it the more cost-effective option, while the Corsair HX1500i provides a 25% advantage in total wattage, offering significantly more power capacity for demanding hardware configurations.

Users prioritizing budget efficiency should select the Corsair HX1200i, as its lower MSRP provides a clear financial benefit. Conversely, those building high-end systems that require maximum power delivery should choose the Corsair HX1500i to leverage its superior wattage capacity. Because both units are otherwise equivalent in their technical specifications, the decision rests entirely on whether the user requires the additional power headroom of the larger unit or the cost savings of the smaller one.