The max boost in Ubuntu or any linux is 2.1GHz but the boost clock specified is 3.7GHz which it never reaches.
output of `cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq` :
`
2100000
2100000
2100000
2100000
2100000
2100000
2100000
2100000
`
output of `cat /sys/devices/system/cpu/cpu*/cpufreq/bios_limit` :
`
2100000
2100000
2100000
2100000
2100000
2100000
2100000
2100000
`