Question 3800X Stock Voltage

Nikko G

Reputable
Aug 25, 2015
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Hi guys, im just a little concerned about the voltage on my 3800x? I see it jump from 1.5V to 1.35 or around there. Is this normal?
 

EndEffeKt_24

Proper
Mar 27, 2019
249
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15
Yes it's in allowable range, although it could be managed better depending on MB and BIOS version. Usual steps is by adjusting negative voltage offset in BIOS.
As far as I know negative voltage offsets are not advisable on a zen2 cpu because the bios will just increase LLC to tackle that. For this reason youtubers like optimumtech thought for a brief moment they could run zen2 cpus at insane undervolts with an all-core overclock. He had to correct himself later. AMD specifies that the high voltages we see only apply for brief periods and only in low wattage situations to stabilize the cores with as low ampere as possible to allow for low powerdraw. I am on my mobile and dont recall the source-post for this.

Edit: found it.
https://www.reddit.com/r/Amd/comments/cbls9g View: https://www.reddit.com/r/Amd/comments/cbls9g/the_final_word_on_idle_voltages_for_3rd_gen_ryzen/
 
Reactions: drea.drechsler
I can do some negative offset on my rig, not much, about 0.02v but even that keeps voltage down to less than 1.4v at idle where it's known to get too high when absolutely not necessary. BIOS with latest AGESA 1003ABBA keeps voltages in check better.
 

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