x870e Taichi + 9800x3D Disable PBO
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=113297
Printed Date: 15 Aug 2025 at 2:14am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: x870e Taichi + 9800x3D Disable PBO
Posted By: MistMerchant
Subject: x870e Taichi + 9800x3D Disable PBO
Date Posted: 14 Aug 2025 at 8:26am
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Just built a pc and the combo i have is a ASRock x870e Taichi, ASRock 9070 xt and r7 9800x3d I saw there was issues floating around that were impacting a small number of CPUs with these motherboards. Most of them appear to be using PBO and/or improper install. Was just curious if "auto" in bios is also considered disabled for PBO... if not can I just disable it entirely through a different method to avoid this being a potential issue? BIOS is on 3.20 and don't have ability to update it for a few days but need to be using for some work/school tasks. Thank you |
Replies:
Posted By: Xaltar
Date Posted: 14 Aug 2025 at 2:39pm
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Honestly, why risk damaging your CPU? Even if the chance is one in a billion. If you absolutely need to use the system without updating first then disable PBO entirely. See page 34 of your https://download.asrock.com/Manual/Software/AMD%20X870/Software_BIOS%20Setup%20Guide_English.pdf" rel="nofollow - user manual and adjust your settings accordingly. Auto is enabled. ------------- 
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Posted By: MistMerchant
Date Posted: 14 Aug 2025 at 7:48pm
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Complicated to explain but yes I don?™t have a choice given the timing of build with personal things going on. I?™ve read over the manual that?™s the issue. There is no disable listed in the bios for this mobo. There?™s auto or enable, you can disable a bunch of other options but for some reason not this one. Which seems really strange that you can?™t turn off when (depending on what mood they are in for the day) AMD considers PBO overclocking and voids warranty. |
Posted By: Xaltar
Date Posted: 14 Aug 2025 at 10:41pm
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I would set the highest negative voltage offset to ensure PBO is not raising voltages to dangerous levels. I would also set the SOC (VDD_SOC) to a negative offset to match your PBO negative offset. To be clear, I am not comfortable recommending anything short of updating your BIOS. I say this because other users with similar questions will see this post. I am not trying to scare you. Good luck and update your BIOS as soon as you are able to ensure peace of mind and proper functionality with your 9800x3D  -------------
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