[tje]

Faster CPU and higher level graphics eat batteries. So they will need to do something to keep battery life to at lease what it is now.

[TXnMA]

As a tradeoff, using smaller lithographic feature size (smaller components, shorter paths) usually equates to a significant decrease in power consumption.

Designers just have to control their glee at more space for components with a healthy discipline to not increase power demand.

Been there; done that...