The MSI MEG X870E ACE MAX is the objective winner of this comparison, securing two out of three spec victories. Its most impactful advantage is a 33% higher maximum memory capacity compared to the alternative. While the ASRock B760M PG Lightning WiFi holds its own in one category, the superior memory support provided by the MSI MEG X870E ACE MAX makes it the more robust option for users requiring extensive system RAM.

Choose the MSI MEG X870E ACE MAX if your primary requirement is maximizing memory support for demanding workloads. Conversely, the ASRock B760M PG Lightning WiFi is the better selection for budget-conscious builders, as it offers an 84% advantage in MSRP. Selecting between these two motherboards depends entirely on whether your priority is the expanded memory ceiling offered by the former or the significant cost efficiency provided by the latter.