Как вырубить “Core Performance Boost” для AMD?

В биосе ”Performance Boost” установлен в disabled.
Как это здесь отключить если это возможно?

$ cpupower frequency-info
analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 4.0 us.
  hardware limits: 1.40 GHz - 3.60 GHz
  available frequency steps: 3.60 GHz, 3.30 GHz, 2.70 GHz, 2.10 GHz, 1.40 GHz
  available cpufreq governors: ondemand, performance, schedutil
  current policy: frequency should be within 1.40 GHz and 3.60 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 1.40 GHz.
  cpufreq stats: 3.60 GHz:2,85%, 3.30 GHz:0,99%, 2.70 GHz:2,88%, 2.10 GHz:9,54%, 1.40 GHz:83,74%  (36143)
  boost state support:
    Supported: yes
    Active: yes

Это работает только до перезагрузки

 # echo 0 | tee /sys/devices/system/cpu/cpufreq/boost
 # echo 0 | tee /sys/devices/system/cpu/cpu[0-7]/cpufreq/cpb
 # echo 0 | tee /sys/devices/system/cpu/cpufreq/policy[0-7]*/cpb


Есть какой-нибудь простой способ?

#cpupower frequency-set -g powersave

А для постоянки - отредактировать файл /etc/conf.d/cpupower