Processing power

Hi all, I am searching for a laptop which is both light and quite powerful in terms of processing capability. I need it mainly to work with satellite images and python coding, even if this is not my primary machine, but a laptop that I can use while travelling and at home for less heavy...

I have done several types of replacements and upgrades over the years, but never a motherboard. 2 of the 4 memory slots on my son's xps 8300 quit working properly(but I got his memory back up to 8 gig with 2 - 4gb chips,) anyway I purchased a OEM xps 8300 motherboard to replace it(forgot to get...