The Gigabyte X870E AORUS MASTER is the objective winner of this comparison, securing victory in ten of the fourteen evaluated categories. Its most significant technical advantage over the alternative is its PCIe x16 slot configuration, which offers a 200% improvement in capacity. While the Gigabyte B850I AORUS PRO remains competitive in specific areas, it falls behind the X870E AORUS MASTER in the majority of measured hardware specifications.

Users prioritizing maximum expansion capabilities should select the Gigabyte X870E AORUS MASTER for its superior PCIe slot support. Conversely, the Gigabyte B850I AORUS PRO is the logical choice for budget-conscious builders, as it provides a 44% advantage in MSRP. Choosing between these two motherboards depends on whether your build requires extensive peripheral connectivity or if you prefer to allocate your resources toward a more cost-effective foundation for your system.