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 wattage, which provides 25% more power capacity than the ASUS ROG THOR 1200W Platinum III. This increased headroom is the primary differentiator between these two power supply units, as they otherwise share identical ratings across five other comparable technical specifications.

Users requiring maximum power delivery for high-draw systems should choose the NZXT C1500 Platinum to utilize its 25% wattage advantage. Conversely, the ASUS ROG THOR 1200W Platinum III remains a viable alternative for builds that do not necessitate the higher capacity of the NZXT unit. Since both components share the same performance ratings in all other measured categories, the decision rests entirely on whether your specific hardware configuration requires the additional power headroom provided by the NZXT model.