The ASRock B850 Steel Legend WiFi is the objective winner of this comparison, securing a lead in seven of the fourteen evaluated specifications. Its most significant advantage over the competition is the inclusion of double the number of PCIe x16 slots, representing a 100% improvement in that category. This hardware configuration provides a clear structural edge for users requiring additional high-bandwidth expansion options compared to the alternative motherboard.

Choose the ASRock B850 Steel Legend WiFi if your build requires multiple PCIe x16 slots for advanced expansion cards or multi-GPU setups. Conversely, the MSI PRO B860M-A WIFI is the superior selection for users who prioritize connectivity through PCIe x1 slots, as it offers a 100% advantage in that specific area. Select the board that aligns with your specific requirements for either high-bandwidth or standard peripheral expansion slots.