The ASUS ROG MAXIMUS Z890 EXTREME is the objective winner of this comparison, securing more total spec victories than its competitor. Its most impactful advantage is the inclusion of M.2 slots, which provides a 100% increase in capacity compared to the alternative. This significant expansion capability makes the ASUS ROG MAXIMUS Z890 EXTREME the superior choice for users who prioritize high-density storage configurations and require the maximum number of high-speed drive interfaces for their system builds.

The MSI MAG B850 TOMAHAWK WIFI is the better option for users who specifically require additional PCIe x1 slots, as it offers a 100% advantage in that category. While the ASUS ROG MAXIMUS Z890 EXTREME excels in storage connectivity, the MSI MAG B850 TOMAHAWK WIFI is better suited for those whose hardware requirements rely on the specific expansion versatility provided by its extra PCIe x1 slots. Choose based on whether your build prioritizes M.2 storage or PCIe expansion.