The MSI MEG Z890 ACE is the objective winner of this comparison, securing more individual specification victories than its competitor. The most impactful advantage offered by this motherboard is its storage capacity, as it provides 100% more M.2 slots than the alternative. While the ASRock X870 Steel Legend WiFi holds a significant 73% advantage in MSRP, the MSI MEG Z890 ACE remains the superior choice for users prioritizing extensive high-speed storage connectivity.

Users who require maximum internal storage expansion should select the MSI MEG Z890 ACE to utilize its superior M.2 slot count. Conversely, the ASRock X870 Steel Legend WiFi is the better option for budget-conscious builders who prioritize a lower MSRP over the additional storage capabilities found on the higher-end model. Choosing between these two components depends entirely on whether your build requires the expanded storage capacity or the cost savings provided by the lower price point.