x470 Taichi voltage too high on CPU
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=12155
Printed Date: 29 Jul 2025 at 5:34pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: x470 Taichi voltage too high on CPU
Posted By: KungFuSpaghetti
Subject: x470 Taichi voltage too high on CPU
Date Posted: 09 Aug 2019 at 3:38pm
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I upgraded from BIOS 3.40 to 3.50 and XMP is now working and stable, however my CPU is showing is Ryzen master as hitting 1.4v just idling... doesn't seem right, is this something to be concerned about?
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Replies:
Posted By: Ray62
Date Posted: 09 Aug 2019 at 4:17pm
https://www.reddit.com/r/Amd/comments/cbls9g/the_final_word_on_idle_voltages_for_3rd_gen_ryzen/
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Asrock Fatal1ty X370 Professional Gaming Offline
Under test:
MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE
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Posted By: KungFuSpaghetti
Date Posted: 09 Aug 2019 at 4:33pm
yeah I've seen the reddit, but doesn't really say about idle voltage, only load? My concern is that most of the CPU's are sleeping in idle on windows desktop, but seeing voltage sat at a constant 1.4vcore spiking to 1.5v
Before I updated the BIOS it was much lower.
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Posted By: Ray62
Date Posted: 09 Aug 2019 at 4:43pm
It says: Please note that it is totally normal for your Ryzen to use voltages in a range of 0.200V - 1.500V -- this is the factory operating range of the CPU.
Select/configure the power plan, use HWInfo to see the min/max values.
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Asrock Fatal1ty X370 Professional Gaming Offline
Under test:
MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE
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Posted By: KungFuSpaghetti
Date Posted: 09 Aug 2019 at 6:04pm
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Okay if that's normal I'll ignore it. Think there's another new BIOS now anyway for me to try.
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Posted By: butchboy
Date Posted: 09 Aug 2019 at 9:13pm
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Any background process can affect idle speeds. I had icue running in the background (system tray). When I closed it, it dropped my voltage by .3. Other processes don't seem to affect voltage that much. So when looking at idle stats, I would make sure everything is closed other than Ryzen Master.
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