I added something to my previous post
Check amd-pstate with linux-bore itself by changing the kernel parameters.
Does it provide more power profiles than amd_pstate_epp?
powersave with amd-pstate would be bit laggy as it lowers down the max cpu freq itself.
powersave and performance profiles (powersave is perceived to be better, it may be placebo) both are kind of similar in amd_pstate_epp.
amd-pstate gives you more options and control with more profiles, whereas amd_pstate_epp doesn’t.
So the ideal, configs are
amd-pstate with on-demand
&
amd_pstate_epp with powersave
I ran tests with both configs and amd-pstate gave better battery by a couple of mins(marginal difference) with similar work loads. But that was kernel 5.19.
This could have changed with kernel 6.0.
You can check out my tests in the thread:
amd_pstate_epp is supposed to be the successor of amd-pstate, but I suppose it’s still in development.