I use Lubuntu 15.04 I've noticed that my processor (AMD A6 6310) works at 1800 MHz frequency and not more, while AMD promised 2,4 GHz with Turbo Core option.
How to enable Turbo Core option?
$ 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: 1000 MHz - 1.80 GHz available frequency steps: 1.80 GHz, 1.60 GHz, 1.40 GHz, 1.20 GHz, 1000 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1000 MHz and 1.80 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1000 MHz. cpufreq stats: 1.80 GHz:36,16%, 1.60 GHz:2,73%, 1.40 GHz:3,99%, 1.20 GHz:11,66%, 1000 MHz:45,45% (14681) boost state support: Supported: yes Active: yes