[Unit]
Description=Disable Turbo Boost on Intel CPU

[Service]
ExecStart=/bin/sh -c 'for core in `cat /proc/cpuinfo | grep processor | awk \'{print $3}\'`; do sudo wrmsr -p$core 0x1a0 0x4000850089; done'
ExecStop=/bin/sh -c 'for core in `cat /proc/cpuinfo | grep processor | awk \'{print $3}\'`; do sudo wrmsr -p$core 0x1a0 0x850089; done'
RemainAfterExit=yes

[Install]
WantedBy=sysinit.target