R9 7845HX Undervolting not working despite being in the "Supported" list

[NinjaBlazin]

R9 7845HX Undervolting not working despite being in the "Supported" list

[seerge]

@NinjaBlazin hello,

Actually that "OK" is answer from Ryzen System Management Unit (from UXTU that app uses). It means that value was accepted :)

Your voltage won't drop unless you also limit CPU power :) what undervolting does (same as undervolting for GPU) it allows device to run with a tiny-bit higher clocks with same voltage

How do you test results ?

I would advice to run Cinebench23 (or something similar) with NO undervolting, and with -30 and compare.

[NinjaBlazin]

@NinjaBlazin hello,

Actually that "OK" is answer from Ryzen System Management Unit (from UXTU that app uses). It means that value was accepted :)

Your voltage won't drop unless you also limit CPU power :) what undervolting does (same as undervolting for GPU) it allows device to run with a tiny-bit higher clocks with same voltage

How do you test results ?

I would advice to run Cinebench23 (or something similar) with NO undervolting, and with -30 and compare.

I use Cinebench23 already with HWInfo running in the background. I set a CPU Power Limit to 80W CPU Sustained (SPL), CPU Slow (sPPT) and CPU Fast (fPPT). Do I need to further reduce my Power Limit? The reason I want to undervolt is to lower my CPU temps without reducing overall performance that much. I have seen no difference in Cinebench23 score (only marginal).

[seerge]

@NinjaBlazin what do you understand under marginal?

I get like 14000 points on my G14 2022 6900HS w/o undervolting, and around 14500 with undervolting :) so around 3%. That's what you get

If you want to get lower temps in games, you can literally set limit to something like 40W and, most probably performance hit won't be significant.

Anyway, I can't "fix" anything here, as there is no bug :) values are applied and accepted

You can also try to undervolt with UXTU directly https://github.com/JamesCJ60/Universal-x86-Tuning-Utility (most probably with same outcome?) :)

[seerge]

Correction, I get 14170 without undervolting, and 14530 with maximum possible undervolting in my case. So 2.5% gain.

[seerge]

@NinjaBlazin any updates?

[seerge]

Closed as abandoned due to lack of response from issue starter