The ASRock X870E Taichi is the objective winner of this comparison, securing more victories across the evaluated technical specifications. Its most significant advantage over the competition is the inclusion of PCIe x1 slots, which offer a 100% improvement in capacity for expansion cards. While both motherboards share many identical features, the ASRock X870E Taichi provides superior connectivity for users who prioritize traditional expansion slots in their system builds.

Users who require maximum expansion card support should choose the ASRock X870E Taichi for its superior PCIe x1 slot count. Conversely, those who prioritize high-density storage configurations should opt for the ASUS ROG MAXIMUS Z890 HERO, as it provides a 50% advantage in available M.2 slots. Selecting between these two components depends entirely on whether your specific build requirements lean toward additional expansion hardware or increased internal drive capacity.