Do other linux users see the CPU boost to 5.1 GHz?
I see
sudo dmidecode -t processor | grep Hz
External Clock: 100 MHz
Max Speed: 5150 MHz
Current Speed: 2000 MHz
but the kernel seems to think 4.37 GHz is enough:
cpupower frequency-info
analyzing CPU 9:
driver: amd-pstate-epp
CPUs which run at the same hardware frequency: 9
CPUs which need to have their frequency coordinated by software: 9
maximum transition latency: Cannot determine or is not supported.
hardware limits: 599 MHz - 4.37 GHz
available cpufreq governors: performance powersave
current policy: frequency should be within 599 MHz and 4.37 GHz.
The governor “powersave” may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 3.31 GHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
AMD PSTATE Highest Performance: 166. Maximum Frequency: 4.37 GHz.
AMD PSTATE Nominal Performance: 76. Nominal Frequency: 2.00 GHz.
AMD PSTATE Lowest Non-linear Performance: 53. Lowest Non-linear Frequency: 1.39 GHz.
AMD PSTATE Lowest Performance: 23. Lowest Frequency: 599 MHz.
and I never see the CPU go higher than 4.37 GHz.
This is the STX.3xx.SER9.V103.P8C0M0C15.68.Link.GID.Linux_kimi_v1 bios and Ubuntu 24.10, kernel 6.11.0-14-generic #15-Ubuntu
[update]
it appears to depend on the bios setting ‘PowerLimit’: Balanced 54W is default, if you set it to Performance 65W the CPU does boost to 5.1 GHz
