The ASUS ROG THOR 1000W Platinum III and the Corsair HX1500i are objectively tied, as both units share five identical specifications. The ASUS ROG THOR 1000W Platinum III holds a 3% advantage in its ATX version, while the Corsair HX1500i offers a 50% advantage in total wattage. Because these components perform equally across the majority of measured metrics, the decision rests entirely on whether your specific build requires the newer ATX standard or significantly higher power capacity.

Choose the ASUS ROG THOR 1000W Platinum III if your system configuration prioritizes the latest ATX version compatibility. Conversely, select the Corsair HX1500i if your hardware demands a higher wattage output to support your power requirements. Both units provide equivalent performance in all other measured categories, so your final selection should be guided strictly by these two distinct technical advantages rather than any perceived difference in overall capability.