The Corsair AX1600i is the objective winner of this comparison, securing more total spec victories across the evaluated fields. Its most significant technical advantage is the inclusion of SATA connectors, which offer a 100% increase in capacity compared to the alternative. This superior connectivity density makes it the more robust option for systems requiring extensive peripheral support, ensuring that users have ample power distribution options for complex storage arrays or multiple internal components.

Choose the Corsair AX1600i if your build requires a high volume of SATA connections for numerous drives or accessories. Conversely, select the MSI MPG A1000G PCIE5 if your primary requirement is the 12VHPWR connector, which provides a 100% advantage in that specific interface category. This makes the MSI unit the more suitable choice for modern graphics cards that utilize the latest power delivery standard, prioritizing current hardware compatibility over raw peripheral expansion.