A6 cannot support retina display
A6X consumes too much powerApple has no choice but to use A7 if they want to put a retina display on the mini.
I didn't think about the power saving bit, that probably makes the most sense of all.
becuase the A6 can't drive a retina display in ios7
I'm no engineer, so this is an honest question. If that is true, why can the iPad 3 A5X chip power a Retina screen with iOS7?