The Gigabyte B850 AORUS ELITE WIFI wins in 9 out of 14 comparable specs, with 3 ties. Its biggest advantage is Max Memory (300% better).
PRO B660M-A WIFI DDR4 wins in 2 specs (PCIe x1 Slots: 100% better).
Recommendation
Choose B850 AORUS ELITE WIFI if you want the best overall performance — especially max memory.
Choose PRO B660M-A WIFI DDR4 if pcie x1 slots matters more to you.
