The MSI MEG Z890 ACE wins in 9 out of 14 comparable specs, with 3 ties. Its biggest advantage is USB Type-C (200% better).
B650 AORUS ELITE AX wins in 2 specs (MSRP: 80% better).
Recommendation
Choose MEG Z890 ACE if you want the best overall performance — especially usb type-c.
Choose B650 AORUS ELITE AX if msrp matters more to you.
