I work on this image and daily drove it for a while. It's basically Matt Hartley's TLP power recommendations out of the box (we collaborated on this, he's the Linux support person at Framework)
I have an intel FW13 and now prefer the newer gnome-power-profile that we ship instead of the TLP-based recommendations. It has all the latest patches from upstream and it works great on both AMD and Intel systems. I don't personally have an AMD Framework but we have enough people using it to know that the gnome-power-profile setup is awesome thanks to AMD's contributions to gnome-power-profile.
Ideally a Framework image shouldn't need to exist
to make things more complicated Fedora is considering switching to tuned
which is another, third power manager which should unify the stack. Universal Blue is currently testing this in the bazzite:testing
branch of that custom image and we're hoping to get that feedback back to Framework. Hope this helps!
I am unsure of the status of KDE offhand, I'm getting a bit north of 5 hours when on a plane and on wifi.
I would love to find some script or tool that can just grab all my logs and chart them out so people can share their results in a more reliable manner because I suck at keeping track of this kind of stuff by hand.