The ASRock B850M PG Riptide WiFi is the objective winner of this comparison, securing more individual specification victories than its competitor. Its most significant advantage is a 100% increase in maximum memory capacity compared to the MSI MEG X570 UNIFY. While both boards share several identical specifications, the ASRock B850M PG Riptide WiFi provides a superior ceiling for system RAM, making it the more capable option for memory-intensive tasks based on the provided data.

Users prioritizing high-capacity memory configurations should choose the ASRock B850M PG Riptide WiFi for its clear advantage in that category. Conversely, the MSI MEG X570 UNIFY is the better selection for those requiring extensive expansion capabilities, as it offers a 200% advantage in the number of PCIe x16 slots. Selecting between these two motherboards depends entirely on whether your specific build requirements favor maximum system memory or a higher count of PCIe expansion slots.