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AB350 itx Voltage and CPU frequency not applying.
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ApocPony View Drop Down
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Joined: 09 Jul 2018
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    Posted: 09 Jul 2018 at 11:03pm
[URL=][/URL]Hi all new to the forum and AMD community.Completed a build recently with the 2200g paired with the ab350 itx and Corsair vengeance @ 3200 bios 4.6. So rig is stable runs great, ram runs at rated 3200mhz as per xmp profile.

My issue is I'm trying to undervolt the chip, I can apply a -100 offset to the CPU core. But when I try to manually adjust CPU frequency's and Voltage it saves in bios but does not carry over after boot to OS. I'm pretty stumped as it seems pretty straight forward. Voltage is upping to 1.25 during testing. I can drop the frequency to 3000 and that also changes nothing. What have I missed?

Cheers and thanks for your feedback.

Edited by ApocPony - 09 Jul 2018 at 11:17pm
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WinWiz View Drop Down
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Points: 45 		Post Options Post Options   Thanks (0) Thanks(0)   Quote WinWiz Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 6:53am
I have similar problem, trying to use Pstate to undervolt my Ryzen 2400G. Currently my system is stable at 3.6hz 1.2V. I would like to test lower Vcore but the BIOS (Beta L4.51D) seems to ignore Pstate VID's under 1.2V (HEX 38). Lower frequency Pstates enables lower VID's -If I enter higher frequency the BIOS seems to automatically increase Vcore...
Is thee any BIOS setting I need to change to enforce the lower Vcores?

Regarding frequency I think you need to disable core boost if you want to run at manual settings.



Edited by WinWiz - 15 Jul 2018 at 7:02am
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dspcmn View Drop Down
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Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dspcmn Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jul 2018 at 4:35pm
Originally posted by ApocPony ApocPony wrote:

But when I try to manually adjust CPU frequency's and Voltage it saves in bios but does not carry over after boot to OS. I'm pretty stumped as it seems pretty straight forward. Voltage is upping to 1.25 during testing. I can drop the frequency to 3000 and that also changes nothing. What have I missed?


I think another user reported a similar bug http://forum.asrock.com/forum_posts.asp?TID=7936 , the current beta BIOS solved that issue but broke something else (USB ports?).
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