超頻
/boot/config.txt [pi4] over_voltage=6 arm_freq=2147
看頻率
$ cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq $ cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq看溫度
vcgencmd measure_temp
