EXPO 1.2 only brings partial CUDIMM support due to lack of native IMC compatibility — Asus also working on updating older B650 and X670 boards with EXPO 1.2

New AGESA updates are bringing EXPO 1.2 support to more and more 800-series AM5 motherboards, but CUDIMM support remains only partial. Because Zen 4 and 5’s IMC is incompatible with CUDIMM, it can only run in bypass mode with limited speeds. Moreover, older 600-series motherboards are now also expected to get EXPO 1.2 support later.