[neogodless]

I don't think I know enough to give a great answer.

The obvious is TSMC's "7nm" and iterative 6nm enables greater efficiency over "Intel 7." Beyond that, presumably there's some IPC advantage that means more work can be done with the same clocks and power draw.

It's odd, because 12th gen is quite performant and seems efficient, and yet somehow the battery life isn't very good.

[formerly_proven]

Intel's 1240P and AMD's 6600U perform more or less the same at the same power.