Your not gonna get much from that. Your much better off looking for more efficient processors. If your looking at a brand new tuxedo you have a pretty high budget already so id suggest waiting a bit and looking at the new mobile CPUs from intel and amd coming out which seem to have really good efficiency. Linux support for them should roll out pretty quick since its not like they have the same challenges as ARM chips being x86.
A lot of the people who would do the work simply don’t have access to the hardware to test stuff and so progress is slow. Would help a lot if qualcomm sent devs some hardware.