The Gigabyte Z890 AORUS MASTER is the objective winner of this comparison, securing victory in eight out of thirteen evaluated specifications. Its most significant technical advantage over the ASRock B550 Steel Legend is its maximum memory capacity, which is 100% higher. While the ASRock B550 Steel Legend holds a 100% advantage in the number of PCIe x1 slots, the Gigabyte Z890 AORUS MASTER maintains a clear lead across the majority of the measured categories.

Users requiring the highest possible memory capacity for intensive workloads should choose the Gigabyte Z890 AORUS MASTER. Conversely, the ASRock B550 Steel Legend is the better option for builders who prioritize a higher count of PCIe x1 slots for their specific expansion needs. Selecting between these two motherboards depends entirely on whether your system configuration relies on superior memory support or a greater quantity of available PCIe x1 connectivity.