The Corsair HX1500i is the objective winner of this comparison, securing more individual specification victories than its counterpart. While the Corsair AX1600i maintains a significant lead in power efficiency, outperforming the alternative by 20 percent, the Corsair HX1500i provides a more modern feature set. The most impactful advantage for the Corsair HX1500i is its inclusion of the 12VHPWR connector, which represents a 100 percent improvement in native compatibility for this specific connection type over the Corsair AX1600i.

Users prioritizing maximum energy savings should select the Corsair AX1600i to leverage its superior efficiency rating. Conversely, the Corsair HX1500i is the better choice for builders who require the 12VHPWR connector for modern hardware compatibility. By choosing the Corsair HX1500i, users gain a more versatile power supply that aligns with current industry standards, whereas the Corsair AX1600i remains the preferred option for those focused strictly on minimizing power loss during operation.