Hi there,
I’m another one of those poor souls who can’t get their pkg c-states any higher than C3. Here’s my setup:
Motherboard: Asrock B660M-ITX/ac
CPU: i3-12100
NVME: Samsung 970 EVO 500Gb
RAM: 1 x Kingston Value RAM 16Gb 3200
PSU: Silverstone Strider 550W 80+ Gold ST55F-G
I do also have a 6TB Ironwolf HDD as well, but at the moment I have it unplugged. Also unplugged are my front panel USBs, front audio ports and a case fan. I’m currently running Ubuntu 22.04 LTS Server with kernel 6.2.0-31-generic. This is a completely fresh install, so far I have only setup ssh, ufw, powertop, and turbostat.
I believe I have setup my BIOS correctly, it is also updated to latest release. C-States and APSM are all enabled, along with SATA Aggressive Link Power. Intel turbo boost has been disabled, along with Audio, RGB LEDS, Intel Ethernet I219-V. WAN device is still enabled as this is what I am using at the moment to connect to my network but I have tried with wifi disabled and LAN enabled and there was no difference. I even tried with both disabled, again no difference.
When running powertop I can get no better than C3. When I run powertop with auto-tune there is no difference. My governor is set to powersave.
I’ve been measuring my power use at the wall and I am getting 19watts without the HDD and 27 with.
Here is a screenshot of my powertop
Here is a screen shot of my APSM status
Here are my BIOS photos
https://ibb.co/4sfx1Kz
https://ibb.co/hHB80s1
https://ibb.co/vBrzBK5
https://ibb.co/mDsrr2N
https://ibb.co/nfXb52J
https://ibb.co/sJ2c2B4
https://ibb.co/XDQHWTj
https://ibb.co/JBtk785
https://ibb.co/44dwkPd
https://ibb.co/nbq8sLb
https://ibb.co/022Yg3c
Questions:
Does there appear to be anything wrong with my setup?
My PSU is old, could it be preventing the higher C-States?
Is perhaps powertop not registering the higher C-States?
If powertop is not registering the C-States correctly and I am actually at say C6 what would explain the high power use. The old PSU? Or the mobo is just crap?
If the PSU is a problem what PSUs are currently recommended. The Corsair RM550x (2021) seems to be no longer available.
If I’m just unlucky and have a crap mobo what Itx 12th gen boards are recommended
Thanks, and appreciate the help.