The ASRock X870E Taichi is the objective winner of this comparison, securing a higher number of superior specifications across the evaluated fields. Its most impactful advantage is the inclusion of PCIe x1 slots, which offer a 100% improvement over the alternative. While both motherboards provide competitive feature sets, the ASRock X870E Taichi holds the edge in overall technical specifications, making it the more robust choice for users prioritizing expansion capabilities through its specific slot configuration.

Users who require additional PCIe x1 connectivity for specialized expansion cards should select the ASRock X870E Taichi. Conversely, the ASUS ROG STRIX Z890-A GAMING WIFI is the better option for builders who prioritize storage density, as it provides a 25% advantage in the number of available M.2 slots. Choosing between these two components depends entirely on whether your build configuration demands more physical expansion slots or a higher capacity for high-speed M.2 storage devices.