thanks dude but this kernel (5.19.13.arch1-1) amd-pstate works great for me
it uses only around 2.5W (cat /sys/class/power_supply/BAT0/power_now)
even at powersave governor the clocks are at between around 400mhz to 1000mhz
and the temps also below 40*c
and the estimated reaming time was around 12hrs (acpi -b)
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