As for CPU undervolting you can also check Coreboot. May be you will find some options for undervolting but i never heard about that on thinkpads.
]]>cpupower frequency-set -g performance
cpupower frequency-set -u 1200MHz
It works with intel_pstate power management.
Another important tweak for higher battery life is the backlight brightness. You can also buy external powerbank or additional batteries for your laptop.
]]>I was looking for ways to undervolt my trusty old T420 to have more battery life and better temperatures, I would like some guidance from more advanced users out there, perhaps some do's and dont's or a guide that has helped you guys in the past.
Thanks !
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