On their desktop Ryzen AI Max, which uses kind of the same design as "Unified Memory" on Apple silicon. I think the comment you reply to refer to their laptops designs.
Ok, I was wrong. Didn't think of checking the desktop designs since it was a discussion on laptops.
They even decided to make me lie — twice, on the same day with their latest announcement: https://frame.work/ro/en/laptop16?tab=whats-new
"LPDDR5x-8000"