Change MMIO power limit of your Intel CPUs through a command line interface. By design this will not overwrite MSR values, so if MSR values are set low enough, MMIO power limits will not be followed by the CPU.
I am not responsible for any damage caused by this program. Use at your own risk.
This will not work on AMD CPUs (pretty obvious).
Usage: mmio [OPTION]...
-h, --help displays the help message and exit
-l, --power-limit-1 set the power limit 1 register in watts. range: 5 - 255
-s, --power-limit-2 (optional) set the power limit 2 register in watts. range: 5 - 255
-e, --epp (optional) set the energy performance preference register. range: 0 - 255