? Ryzen 1000, 2000, 3000, 5000 series all have there own max promised memory speed. The same goes for Intel The only thing that is fairly standard is the low speed boot up speed before XMP is activated, to ensure that the pc is able to boot up. No one prevents AMD or Intel to make a bios with a button that clocks the memory to max promised speed. Jedec is just the steps on the staircase, Intel can still choice how many steps up the staircase they want to promise would work.