The Gigabyte B650 AORUS ELITE AX is the objective winner of this comparison, securing a higher count of superior specifications across the evaluated fields. Its most significant advantage lies in its PCIe x16 slot configuration, which offers a 200% improvement over the alternative. This hardware lead makes it the more versatile option for users requiring extensive expansion capabilities for multiple add-in cards or specialized hardware configurations within their system build.

Choose the Gigabyte B650 AORUS ELITE AX if your primary requirement is maximizing the number of available PCIe x16 slots for your expansion needs. Conversely, select the Gigabyte B850I AORUS PRO if your priority is utilizing the latest interface standards, as it provides a 25% advantage in PCIe generation support. Your decision should depend entirely on whether you value the quantity of expansion slots or the speed of the PCIe generation.