https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 16 Apr 2026 08:36:38 +0000 Tue, 26 Mar 2024 16:37:01 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=32927 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115706&title=only-c3-cstate#115706 Author: djieno
Subject: 32927
Posted: 26 Mar 2024 at 4:37pm

In my setup I can relate to these options:

OC tweaker:

Overclock mode (speed bus) (option auto/manual)
manual:
     bclk(mhz)
cpu frequency and voltage (vid) change
soc/uncore oc mode (options: auto disbaled enabled
soc/uncore oc voltage (VID) (auto)
cld0 cddp voltage control
cld0 cddg ccd voltage control

DRAM etc below
###############
Advanced/amd cbs:
     performance
          custom core pstates
               accept
               Options auto/custom)
               custom give:
                    pstates freq mhz
                    pstates vid
                    
I went through alle menus under both main sections - didn't see the power supply idle settings.

I also searched the nvram.txt for possible combinations. Could you check the codeshare is posted if 'I need better glases' ? :D

Already much appreciated for your help sofar!]]> Tue, 26 Mar 2024 16:37:01 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115706&title=only-c3-cstate#115706 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115704&title=only-c3-cstate#115704 Author: Katana1074
Subject: 32927
Posted: 26 Mar 2024 at 5:53am

On ASRock boards, after updating the BIOS, going to: OC Tweaker > OC Mode , setting it to AMD CBS, and then going to Advanced > AMD CBS > Power Supply Idle Control, and setting it to typical current idle. Press F10, and then Enter to cement it. The UI might be confusing otherwise.]]> Tue, 26 Mar 2024 05:53:58 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115704&title=only-c3-cstate#115704 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115684&title=only-c3-cstate#115684 Author: djieno
Subject: 32927
Posted: 24 Mar 2024 at 9:23pm

I managed to get nvram.txt from winsce - Anybody which settings I need to change ? There are some obvious ones with Cstates but just like to fully unlock and have c3+ states.

https://codeshare.io/WLXwK8 ]]> Sun, 24 Mar 2024 21:23:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115684&title=only-c3-cstate#115684 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115415&title=only-c3-cstate#115415 Author: djieno
Subject: 32927
Posted: 21 Mar 2024 at 8:21pm

no worries!

advanced/cpu configuration/pss support was already on enabled

the article also mentioned disabling
advanced/cpu configuration/smt disabled made not difference (still on pkg(os) c3 max)

all the other mentioned in the reddit post might be already inapplicable of it's version. At least I couldn't find them in my p3.40

]]> Thu, 21 Mar 2024 20:21:42 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115415&title=only-c3-cstate#115415 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115408&title=only-c3-cstate#115408 Author: Katana1074
Subject: 32927
Posted: 21 Mar 2024 at 7:28pm

Hi there...

Please see the instructions at :

https://www.reddit.com/r/Amd/comments/8yzvxz/ryzen_c6_state_sleep_power_supply_common_current/

Sorry cool and quiet has been renamed go to Advanced\CPU Configuration\PSS Support....

Edited by Katana1074 - 21 Mar 2024 at 7:31pm]]> Thu, 21 Mar 2024 19:28:41 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115408&title=only-c3-cstate#115408 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115391&title=only-c3-cstate#115391 Author: djieno
Subject: 32927
Posted: 21 Mar 2024 at 4:14pm

HI ! Thanks for replying and helping to solve the c-states issue!

I've been searching in the bios for the two setttings:

Cool Quiet: enabled
Power Supply Idle Control: Typical

I didn't see them. I've checked advanced/cpu configuration and also went through all the overclocking items. Did I miss them or is it like some b450m forum messages I found that asrock removed these?

Would you know where the two settingss are located in the p3.40 version for b550m ? Most likely I missed them...

]]> Thu, 21 Mar 2024 16:14:30 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115391&title=only-c3-cstate#115391 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115282&title=only-c3-cstate#115282 Author: Katana1074
Subject: 32927
Posted: 20 Mar 2024 at 3:16pm

Hi there.....

4750g Pro should have upto c6....

try the following :

Global C-state: enabled,
Cool n Quiet: enabled,
Power Supply Idle Control: Typical

Regards

Edited by Katana1074 - 20 Mar 2024 at 3:26pm]]> Wed, 20 Mar 2024 15:16:54 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115282&title=only-c3-cstate#115282 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115218&title=only-c3-cstate#115218 Author: djieno
Subject: 32927
Posted: 19 Mar 2024 at 5:52pm

I've updated the bios

ubuntu@node02:~$ sudo dmidecode -t bios
# dmidecode 3.3
Getting SMBIOS data from sysfs.
SMBIOS 3.3.0 present.

Handle 0x0000, DMI type 0, 26 bytes
BIOS Information
        Vendor: American Megatrends International, LLC.
        Version: P3.40
        Release Date: 01/18/2024
        Address: 0xF0000
        Runtime Size: 64 kB
        ROM Size: 16 MB
        Characteristics:
               PCI is supported
               BIOS is upgradeable
               BIOS shadowing is allowed
               Boot from CD is supported
               Selectable boot is supported
               BIOS ROM is socketed
               EDD is supported
               Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
               Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
               5.25"/360 kB floppy services are supported (int 13h)
               5.25"/1.2 MB floppy services are supported (int 13h)
               3.5"/720 kB floppy services are supported (int 13h)
               3.5"/2.88 MB floppy services are supported (int 13h)
               Print screen service is supported (int 5h)
               8042 keyboard services are supported (int 9h)
               Serial services are supported (int 14h)
               Printer services are supported (int 17h)
               CGA/mono video services are supported (int 10h)
               ACPI is supported
               USB legacy is supported
               BIOS boot specification is supported
               Targeted content distribution is supported
               UEFI is supported
        BIOS Revision: 5.17

Enabled c-states under: advanced/amd cbs/cpu common options/global c-state control.

----> Does it needs some other magic setting I missed to enable more than c3 states?

           Pkg(OS) |            Core(OS) |            CPU(OS) 0   CPU(OS) 8
POLL        0.0%    | POLL        0.0%    | POLL        0.0%    0.0 ms 0.0%    0.0 ms
C1          1.1%    | C1          0.9%    | C1          1.0%    0.2 ms 0.8%    0.1 ms
C2        11.7%    | C2        11.2%    | C2        11.1%    0.4 ms 11.2%    0.4 ms
C3        81.8%    | C3        81.5%    | C3        81.3%    3.5 ms 81.8%    3.4 ms]]> Tue, 19 Mar 2024 17:52:11 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115218&title=only-c3-cstate#115218 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115186&title=only-c3-cstate#115186 Author: Katana1074
Subject: 32927
Posted: 19 Mar 2024 at 5:20am

Hi there try updating to the latest bios (3.40)...

you should be able to change c-states in the bios... ]]> Tue, 19 Mar 2024 05:20:35 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115186&title=only-c3-cstate#115186 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115103&title=only-c3-cstate#115103 Author: djieno
Subject: 32927
Posted: 18 Mar 2024 at 12:39am

I'm trying to to achieve lower power consumption on 'idle' for my server.

It idles around 18-19 watts having nothing attached. Running RKE2/K8S around 21-22. I've noticed in powertop it only offers c3 state and not like my other machines upto c10.

Asrock riptide B550M P1.40
Ryzen 7 pro 4750G
gskill 64 gb

I've found AMISCE (SCELNX or SCEWIN) to be able to unlock bios and enable the hidden feature for an intel based motherboard. As discribed here:
https://askubuntu.com/questions/1483343/c-states-not-fuctioning-on-ubuntu-server-22-04-please-help#:~:text=So%20you%20have%20to%20enable/change%20hidden%20BIOS%20menus%20by%20using%20AMISCE%20(AMI%20Setup%20Control%20Environment)%20utility%20v5.03%20or%205.05%20for%20Windows%20(it%20can%20easily%20be%20found%20on%20the%20internet).%20So%20you%20have%20to%20install%20Windows%20and%20to%20enable%20Administrator%20password%20in%20your%20BIOS

Amisce (scelnx) errors: AMISCE not supported on this system

So has anybody else solved this problem not having higher c-states for an amd/am4 motherboard ?

I'm happy to wreck the motherboard attempting to achieve this.



]]> Mon, 18 Mar 2024 00:39:51 +0000 https://forum.asrock.com/forum_posts.asp?TID=32927&PID=115103&title=only-c3-cstate#115103