The MSI MEG X570 UNIFY is the objective winner of this comparison, securing more individual specification victories than its competitor. The most impactful advantage offered by this motherboard is its superior storage expandability, as it provides 50% more M.2 slots than the alternative. While the Gigabyte B550 AORUS PRO AC holds its own across several tied categories, the MSI MEG X570 UNIFY ultimately provides a more robust foundation for users requiring high-density internal storage configurations.

Users who prioritize high-speed storage expansion should choose the MSI MEG X570 UNIFY to take advantage of the additional M.2 slots. Conversely, the Gigabyte B550 AORUS PRO AC is the better selection for builders who rely on traditional drive connectivity, as it offers a 50% advantage in available SATA ports. Selecting between these two motherboards depends entirely on whether your specific build requirements favor modern M.2 drive arrays or a higher volume of standard SATA storage devices.