Question AMD RYZEN 9 7950X3D PB Voltage Fluctuation ?

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ERICZ1

Dec 15, 2024
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Good morning,
I have just installed a PC with a RYZEN 9 7950X3D on an ASUS X870 P WIFI CM. RAM Corsair 64 GB EXPO.
The processor is cooled by a CORSAIR ICUE H150I ELITE CAPELLIX XT.
The power supply is an RMX 1000W.
I have a question about processor voltage. when I run OCCT I notice that the voltage fluctuates all the time between 0.7V and 1.1V while staying on the WINDOWS desktop.
The BIOS has been updated and set to default.

Could you help me and tell me what's wrong?
Thank you all in advance
Below is a photo of the tension.

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Bonjour,

Je viens d'installer un PC avec un RYZEN 9 7950X3D sur une CM ASUS X870 P WIFI. RAM Corsair 64 Go EXPO.

Le processeur est refroidi par un CORSAIR ICUE H150I ELITE CAPELLIX XT.

L'alimentation est un RMX 1000W.

J'ai une question sur le voltage du processeur. lorsque je lance OCCT, je remarque que la tension varie tout le temps entre 0,7V et 1,1V en restant sur le bureau WINDOWS..

Le BIOS a été mis à jour et configuré par défaut.

Pourriez m'aider et m'indiquer ce qui ne va pas ?

Merci d'avance à tous

Ci-dessous une photo de la tension.
 
What testing configuration(s) are being used?

What voltage range is expected and what flucuation range is expected?

How much "stress" is being introducted to the system?

What about accuracy with respect to + or - values for any given measurement?

Overall, more detail is needed to determine the scope of the conducted test(s) and how the results must be interpreted.

Just my thoughts on the matter.
 
Ralston18 said:
What testing configuration(s) are being used?

What voltage range is expected and what flucuation range is expected?

How much "stress" is being introducted to the system?

What about accuracy with respect to + or - values for any given measurement?

Overall, more detail is needed to determine the scope of the conducted test(s) and how the results must be interpreted.

Just my thoughts on the matter.
Click to expand...
Thank you, no tests are carried out. These are simply the values of the PC at rest on Windows. I just want to know if it is normal to see the processor voltage varied from 0.7v to 1.2v when idle. This is my first AMD processor.
THANKS
 
I understood your post to mean observed voltage flucuations while OCCT was being run.

Just Windows at idle and no other apps, etc. being run.

= = = =

No specific answer (full disclosure). Going a bit outside of my comfort zone.

I did a search using "amd ryzen 9 processor voltage range at idle at idle".

For the most part a specific answer or even some specific range of possible answers/ voltages is dependent on a number of factors.

Including the specifcs of what OCCT may be testing.

The fluctuations may or may not be an indication of something "being wrong".

Will defer to the CPU and Overclocking communities regarding the meaning of the the observed voltage fluctuations.

Overclocking primarly to provide some sense of expected idle voltage ranges with and without overclocking.
 
My 5600x and 3600 do the same thing.
On desktop with nothing running core speed and voltage drops.
But as soon as windows starts a background task, Windows updates,indexing ,defender update etc... voltage and core speed increase for whatever time the task takes and then back to idle with low voltage and clockspeed.
It is this way by design so it is not a problem.
 
Good morning,
Finally I replaced the ram. 64 GB DDR5 6000mhz CL30 EXPO. And as if by miracle I found stability. the voltage fluctuates from 1 to 1.2v. Thank you all for your responses.
 
@ERICZ1 hey I got the same memory but can't get this 7950x+3d to run right. The 7900x had no issues. This thing is a nitemare. Don't understand the voltage readings either........sits a 1.1v but individual cores read .5.
 
CountMike said:
Make sure you have latest BIOS with AGESA 1.2.0.2a or b.x3D are particularly sensitive to RAM.
Click to expand...
Yeah. I loaded 2a when I replaced the Chipset and installed 2b after the last time I started messing with it again. ASUS BIOS is extremely confusing since it has ASUS PBO and then AMD PBO in Advanced. I had none of these issues with the 7900x. My frame rates seemed to of dropped after goin to the 7950x3d and latency issues. Some games run ok, others don't. Plus I have a hard time swallowing Turbo Mode. You buy a Chipset with all these features and the fix they come up with is to disable smt and the 2nd ccd. I'm thinking this was a bad move and I'm sure I'm not the only one thinking this. About to just go back to the 7900x or the next 9000 series single ccd Chipset. Tried using Ryzen Master some but it would crash my BIOS most of the time. I ended up having the best luck sticking with just changes in BIOS. It is running on a B650 MB, I saw some places where the B670 can give you more control over the 3d cache. I noticed that if I run ultra low latency mode in GPU it runs smoother but limiting the buffered frames to 1 seems to defeat the purpose of the v-cache. Overall it has been a nightmare of an experience.......the 7900x ran amazing with little to no effort to configure. Had no issues.
 
Chemdawg82 said:
Yeah. I loaded 2a when I replaced the Chipset and installed 2b after the last time I started messing with it again. ASUS BIOS is extremely confusing since it has ASUS PBO and then AMD PBO in Advanced. I had none of these issues with the 7900x. My frame rates seemed to of dropped after goin to the 7950x3d and latency issues. Some games run ok, others don't. Plus I have a hard time swallowing Turbo Mode. You buy a Chipset with all these features and the fix they come up with is to disable smt and the 2nd ccd. I'm thinking this was a bad move and I'm sure I'm not the only one thinking this. About to just go back to the 7900x or the next 9000 series single ccd Chipset. Tried using Ryzen Master some but it would crash my BIOS most of the time. I ended up having the best luck sticking with just changes in BIOS. It is running on a B650 MB, I saw some places where the B670 can give you more control over the 3d cache. I noticed that if I run ultra low latency mode in GPU it runs smoother but limiting the buffered frames to 1 seems to defeat the purpose of the v-cache. Overall it has been a nightmare of an experience.......the 7900x ran amazing with little to no effort to configure. Had no issues.
Click to expand...
X670.....typo.....
 
Chemdawg82 said:
Yeah. I loaded 2a when I replaced the Chipset and installed 2b after the last time I started messing with it again. ASUS BIOS is extremely confusing since it has ASUS PBO and then AMD PBO in Advanced. I had none of these issues with the 7900x. My frame rates seemed to of dropped after goin to the 7950x3d and latency issues. Some games run ok, others don't. Plus I have a hard time swallowing Turbo Mode. You buy a Chipset with all these features and the fix they come up with is to disable smt and the 2nd ccd. I'm thinking this was a bad move and I'm sure I'm not the only one thinking this. About to just go back to the 7900x or the next 9000 series single ccd Chipset. Tried using Ryzen Master some but it would crash my BIOS most of the time. I ended up having the best luck sticking with just changes in BIOS. It is running on a B650 MB, I saw some places where the B670 can give you more control over the 3d cache. I noticed that if I run ultra low latency mode in GPU it runs smoother but limiting the buffered frames to 1 seems to defeat the purpose of the v-cache. Overall it has been a nightmare of an experience.......the 7900x ran amazing with little to no effort to configure. Had no issues.
Click to expand...
It's Asus, not a general problem but that "Game mode" is all about disabling CCD without 3D cache so only cores with it are used. Windows 11 was also part of same problem but was supposedly fixed in latest 24H2. It's not about chipset ether, it doesn't control CPU and it's functions, Asus has same problem with B650 too.
 
Yeah. I found out yesterday it also like a clean install too. So last night I started to do a clean install but I'm having issues with that now. I keep getting install failed. I know it has to do with the uefi crap. It's just really frustrating. I will keep on it this weekend and if no luck I'll just take it somewhere. I'm trying to learn this stuff as I go, but I get so frustrated so quick, it hard to stay focused......I saw some good reddit threads about it being all about the install with this Chipset. Not giving up yet......thx.
 
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