The Gigabyte B550 AORUS PRO AC and the Gigabyte B650 AORUS ELITE AX reach an objective tie, as both motherboards secure an equal number of specification victories. While the overall performance profile remains balanced, each board offers a distinct hardware advantage for specific expansion needs. The Gigabyte B550 AORUS PRO AC provides a significant benefit in connectivity for secondary peripherals, featuring 100% more PCIe x1 slots than its counterpart.

Choose the Gigabyte B550 AORUS PRO AC if your build requires maximum PCIe x1 slot availability for additional expansion cards. Conversely, select the Gigabyte B650 AORUS ELITE AX if your primary goal is storage capacity, as it offers a 50% advantage in total M.2 slots. Your decision should rely entirely on whether your system configuration prioritizes traditional expansion card support or high-density M.2 storage integration.