According to cpupower, my AMD APU K10 is having boost state supported but not active.
How can I make use of the boost state?
As checked in Windows, CPU speed can reach 4GHz without issues. But under Fedora, it can only reach 3.7GHz.
analyzing CPU 0:
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: 1.70 GHz - 3.70 GHz
available frequency steps: 3.70 GHz, 3.50 GHz, 3.00 GHz, 2.40 GHz, 1.70 GHz
available cpufreq governors: conservative ondemand userspace powersave performance schedutil
current policy: frequency should be within 1.70 GHz and 3.70 GHz.
The governor “performance” may decide which speed to use
within this range.
current CPU frequency: 3.70 GHz (asserted by call to hardware)
boost state support:
Boost States: 3
Total States: 8
Pstate-Pb0: 4000MHz (boost state)
Pstate-Pb1: 4000MHz (boost state)
Pstate-Pb2: 4000MHz (boost state)