The ASRock X870 Steel Legend WiFi is the objective winner of this comparison, securing a lead in seven of the fourteen evaluated categories. Its most significant technical advantage is its maximum memory capacity, which is 167% higher than that of the alternative. By outperforming the competition in half of the measured specifications, this motherboard establishes itself as the more robust option for users requiring superior memory headroom and a broader range of high-end hardware features.

Choose the ASRock X870 Steel Legend WiFi if your primary requirement is maximizing system memory for demanding workloads. Conversely, the Gigabyte B860M AORUS ELITE WIFI is the better selection for users who prioritize expansion flexibility, as it offers a 100% advantage in available PCIe x1 slots. Selecting between these two components should depend entirely on whether your specific build configuration necessitates higher memory density or additional peripheral connectivity via dedicated expansion slots.