When you buy a new calculator, here is what you need to be looking for and what you need to avoid paying too much attention to:
It doesn't matter if it's the most advanced processor possible, if you have the highest amount of RAM possible, high archive and an high res screen.
All that matters when you choose a new computer is: It must run
The Game. Nothing else. All that matters is
The Game.
So yeah, when you buy a new calculator, what you are looking for in the specs is: the ability to run
The Game that cannot be won.
Even if it can't run the Axe version of
The Game it's OK, because there's still
the original.