The NZXT C1500 Platinum is the objective winner of this comparison, securing more category wins than the ASUS ROG THOR 1200W Platinum III. The most impactful advantage offered by the NZXT C1500 Platinum is its superior power capacity, which provides 25% more wattage than the ASUS ROG THOR 1200W Platinum III. This increased output capability serves as the primary differentiator between these two power supply units, as they otherwise share identical specifications across the remaining five categories.

Users requiring the highest possible power ceiling for their system should choose the NZXT C1500 Platinum to leverage its 25% wattage advantage. Conversely, those who do not require the additional power capacity provided by the NZXT C1500 Platinum may opt for the ASUS ROG THOR 1200W Platinum III, as it matches the performance of its competitor in every other measured specification. Both units offer equivalent functionality for builds that fall within the lower wattage threshold.