The ASRock Z890 Taichi is the objective winner of this comparison, securing more individual specification victories than its counterpart. Its most significant technical advantage is the inclusion of double the M.2 slots compared to the ASRock B850 Steel Legend WiFi, representing a 100% improvement in storage expansion capability. While both boards share many identical specifications, the Taichi provides superior hardware density for users requiring extensive high-speed connectivity options for their internal drives.

Choose the ASRock Z890 Taichi if your build requires maximum storage capacity and the highest number of available M.2 slots for your system configuration. Conversely, the ASRock B850 Steel Legend WiFi is the better selection for budget-conscious builders, as it offers a 62% advantage in MSRP. Opt for the Steel Legend if you prioritize cost efficiency over the expanded storage expansion features found on the Taichi.