Has any of you tried that feature yet? i think it bumped my battery life by at least 30minutes (from 6h to 6h30m) and i even saw that the battery life expectancy on idle going from 6h30mto 7h50m

My laptop is a rather simple samsung series 3, core i3 3110m(ivy bridge) 8gb ram hd 500gb nvidia 620m, running xubuntu 13.04, bumblebee with tlp and lots of battery tweaks here and there