General Discussions

[angeh]

hello there, i recently came across this thread over reddit https://www.reddit.com/r/pcmasterrace/comments/1igmb6f/am5_cpu_stutter_fix/?share_id=cLCtMOD36Doud0T...

in which this guy affirms that having global c-state on auto on the motherboard for am5 processors its pretty much having it as "off or disabled"

where you should instead be setting it as enabled for it to reduce or eliminate any performance issues that your computer may be having with micro stuttering related.

now im pretty much here trying to get some info about if this is accurate or not? and at the same time wondering what is global c-state for?

thanks for your time.

[mengelag]

That was a very interesting video. I have since enabled mine and will report back if I'm having any issues. Cheers @angeh 

[angeh]

i can confirm that at least on my end:

global c-state auto = enabled

                   enabled = enabled

                  disabled = literally disabled

what enabled does is make the cpu when in idle goes into *resting mode* and uses less power less work.

while on disabled mode, it makes the cpu work nonstop always providing high ghz as much it can.

now im not sure if making it work nonstop will have a problem say latency issues or more hiccups than usual.

i got this from someone else that posted it in another forum:

No, C-states on processors are not mandatory; while most modern CPUs have C-states enabled by default, you can usually access BIOS settings to disable them if needed, although doing so would negate the power-saving benefits they provide when a processor is idle.

Key points about C-states:

Function:
C-states allow a processor to enter lower power states when idle, reducing power consumption by turning off parts of the CPU that aren't being used.

Control:
The operating system usually controls when a processor enters a C-state, but some BIOS settings may allow for more granular control.

Impact of disabling:
Disabling C-states means the CPU will always run at full power, even when idle, potentially leading to higher power usage.

[mengelag]

Thank you so much for sharing this information. I'm in a hotter climate with higher electricity costs atm, so this is also beneficial to me in that aspect. Less power means less heat and electricity.

[angeh]

yeah give it a try may be better for you

[Matt_AMD · Accepted solution]

When set to Auto, which is the default value, Global C State and DF C States are enabled. To disable then, you would have to set them to disabled in the BIOS.