The Gigabyte Z790 AORUS ELITE AX is the objective winner of this comparison, securing a higher count of superior specifications across the evaluated fields. Its most impactful advantage is the inclusion of integrated Wi-Fi, which represents a 100% improvement over the alternative. While the Gigabyte B850 GAMING X holds its own in several categories, the Z790 AORUS ELITE AX provides a more robust feature set for users prioritizing modern connectivity standards.

Choose the Gigabyte Z790 AORUS ELITE AX if you require built-in wireless networking capabilities for your build. Conversely, the Gigabyte B850 GAMING X is the better selection for users who prioritize expansion options, as it offers a 100% advantage in the number of available PCIe x1 slots. Selecting between these two motherboards should depend entirely on whether your specific setup relies more heavily on integrated wireless connectivity or additional physical expansion slots.