[fuzzbazz]

If the marketing naming is to be believed, in 1.4nm vs 4nm you'd be able to fit ~twice the transistors in your chip. That's twice the cores, twice the cache... That usually makes it faster.

[gpm]

If the marketing name is to believed... and we assume both dimensions scale the same... (4/1.4)^2 = 8.16x the transistors.