Question Ryzen 5 3600 running lower than base clock speed in Ubuntu 20.04

scripterr

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Jan 17, 2020
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Colif

Win 10 Master
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Ryzen CPU can sleep cores if they not in use, my 3600XT on windows is never at base clock, its often way slower. right now its running at 200mhz. It can go higher, it just doesn't have a need to right now.

2% CPU usage is pretty much idle, what speed does it get to if asked to do something?
Ryzen doesn't run cores unless there is a task to run, I have a 3600 and if i look at its individual core speeds in HWINFO, 5 logical cores are almost always below 100mhz.



T1 cores are the logical cores, T0 actually physically exist.

what is it measuring there? the core ratios or the core speeds themselves? how does it get 1 speed when you have 12 logical cores all doing different speeds?

I normally track the average speed as the others are constantly moving

it wouldn't be only time an OS can't tell what speed CPU is, WIndows has no clue what speed my 3600XT runs at, there are only 2 programs I know of that get it right. HWINFO above and Ryzen master. I am not sure about Ubuntu

this might work but it was for intel cpu - https://unix.stackexchange.com/questions/264632/what-is-the-correct-way-to-view-your-cpu-speed-on-linux

this as well - http://manpages.ubuntu.com/manpages/bionic/man8/hwinfo.8.html (related - https://www.unixmen.com/get-information-hardware-hwinfo-utility/)
 
Last edited:

scripterr

Prominent
Jan 17, 2020
12
0
510
0
Ryzen CPU can sleep cores if they not in use, my 3600XT on windows is never at base clock, its often way slower. right now its running at 200mhz. It can go higher, it just doesn't have a need to right now.

2% CPU usage is pretty much idle, what speed does it get to if asked to do something?
Ryzen doesn't run cores unless there is a task to run, I have a 3600 and if i look at its individual core speeds in HWINFO, 5 logical cores are almost always below 100mhz.



T1 cores are the logical cores, T0 actually physically exist.

what is it measuring there? the core ratios or the core speeds themselves? how does it get 1 speed when you have 12 logical cores all doing different speeds?

I normally track the average speed as the others are constantly moving

it wouldn't be only time an OS can't tell what speed CPU is, WIndows has no clue what speed my 3600XT runs at, there are only 2 programs I know of that get it right. HWINFO above and Ryzen master. I am not sure about Ubuntu

this might work but it was for intel cpu - https://unix.stackexchange.com/questions/264632/what-is-the-correct-way-to-view-your-cpu-speed-on-linux

this as well - http://manpages.ubuntu.com/manpages/bionic/man8/hwinfo.8.html (related - https://www.unixmen.com/get-information-hardware-hwinfo-utility/)
When I ran stress test I see they rising up to 4 GHz but temp also reaching up to 90, is this normal or do I have change some settings in bios? NB: currently Bios settings are purely at stock except A-XMP enabled
 

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