AMD EXPO 1.2 Enables CUDIMM DDR5 Memory Support on Next-Gen Ryzen CPUs, Current CPUs Only Support “Bypass” Mode

AMD is rolling out EXPO 1.2 and AGESA updates to add CUDIMM DDR5 support on AM5 motherboards.

Current Ryzen CPUs can boot CUDIMM modules only in bypass mode, so memory runs at reduced speeds for now.

Full CUDIMM performance will depend on next-generation Ryzen chips, likely including Zen 6, with improved memory controllers.

Motherboard vendors like ASUS and MSI are already preparing BIOS updates for X870, X670, B650, and B850 boards.