The Gigabyte Z890 AORUS MASTER is the objective winner of this comparison, securing victory in eleven of the fourteen evaluated categories. Its most significant technical advantage is the inclusion of double the memory slots compared to the alternative, representing a 100% increase in capacity for system RAM. While the Gigabyte B850I AORUS PRO maintains a lead in one specific area, the Z890 AORUS MASTER dominates the majority of the measured hardware specifications.

Users prioritizing maximum memory expansion and high-end hardware configurations should select the Gigabyte Z890 AORUS MASTER for their build. Conversely, the Gigabyte B850I AORUS PRO is the appropriate choice for budget-conscious consumers, as it offers a 44% advantage in MSRP. Choosing between these two motherboards depends entirely on whether your primary requirement is the superior memory capacity of the former or the cost-efficiency provided by the latter.