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Can't enable P-States on ryzen 7 4800h

Open Groegz opened this issue 4 years ago • 3 comments

Hi People. I don't know jack sh!t about python. People are telling me it is not possible to undervolt the ryzen 7 4800h chip.

I would like to know if you fine people would kindly provide the info;

  • how can I enable the remaining P states? (only 0, 1 and 2 work)
  • what values am I supposed to use to set a voltage for a p-state?
  • and is my chip even supported in the first place?

I would really appreciate any useful intel. Thank you. Edit: I am on an XMG core 15 (equivalent to eluktronics rp 15) and my goal is to squeeze as much battery life out of my system as possible.

Groegz avatar Aug 26 '21 20:08 Groegz

I am in no way any more clever in this than you are, but as far as my understanding goes, the lower the P state, the higher heat and performance at the cost of battery life.

...And I am facing the same issue of not being able to get higher P-state.

litoj avatar Jun 23 '22 21:06 litoj

but for overclocking I thing there is something in the kernel params you must enable first to unlock the full control

litoj avatar Jun 23 '22 21:06 litoj

btw you can change the values, but not with zenstates, rather with https://github.com/kevinlekiller/amdctl/issues/40 The program works well and this issue showed me how to monitor the stuff. For me lowering the voltage works, but if you want to get to lower p-states you must crash the higher ones, like with setting it to higher frequency than specified by the vendor.

litoj avatar Jun 24 '22 08:06 litoj