The ASRock X870 Steel Legend WiFi is the objective winner of this comparison, securing more individual specification victories than the ASRock H670 Steel Legend. While both motherboards share several identical features, the ASRock X870 Steel Legend WiFi provides a significant advantage in memory capacity, offering 100% more maximum memory than its counterpart. This substantial increase in supported RAM capacity serves as the most impactful differentiator between these two hardware options.

Users who prioritize high-capacity memory configurations for demanding workloads should select the ASRock X870 Steel Legend WiFi to take advantage of its superior memory support. Conversely, the ASRock H670 Steel Legend remains the better choice for builders who specifically require additional expansion options, as it provides a 100% advantage in available PCIe x1 slots. Your final decision should depend on whether your system build requires greater memory overhead or increased connectivity for peripheral expansion cards.