The ASUS ROG STRIX Z590-E GAMING WIFI wins in 9 out of 14 comparable specs, with 3 ties. Its biggest advantage is PCIe x16 Slots (200% better).
PRO B660M-A WIFI DDR4 wins in 2 specs (PCIe x1 Slots: 100% better).
Recommendation
Choose ROG STRIX Z590-E GAMING WIFI if you want the best overall performance — especially pcie x16 slots.
Choose PRO B660M-A WIFI DDR4 if pcie x1 slots matters more to you.
