The ASRock B550 Steel Legend is the objective winner of this comparison, securing a lead in eight out of thirteen total specifications. Its most significant advantage over the competition is its storage capacity, offering 200% more SATA ports for internal drive connectivity. This hardware configuration provides a more robust foundation for users requiring extensive local storage arrays compared to the alternative, establishing the ASRock B550 Steel Legend as the superior choice based on the provided technical data.

Choose the ASRock B550 Steel Legend if your primary requirement is high-capacity storage expansion through multiple SATA drives. Conversely, select the ASUS ROG STRIX X870-I GAMING WIFI if your workflow prioritizes modern peripheral connectivity, as it offers a 200% advantage in USB Type-C port availability. Your decision should depend entirely on whether you need to prioritize internal drive density or the latest high-speed external interface standards for your specific system build.