Differences in AMD P-State modes after kernel 6.3

AMD P-State is a CPU scaling driver for AMD platforms, after the kernel 6.3, AMD P-State EPP has been added, making the current amd_pstate= kernel parameter one more available value. However, I've googled and haven't found a clearer summary, so I'll throw it out there. My personal summary of these modes is:

First released: https://t.me/archlinuxcn_group/2929521