Are cores really doubling every 2 years per unit of cost? Intel's chips seems to be getting more expensive with each new generation. Or they do stuff like calli

Are cores really doubling every 2 years per unit of cost? Intel's chips seems to be getting more expensive with each new generation. Or they do stuff like calling Atom "Pentium", Avoton "Xeon-D", and make dual-core "Core i7", to trick you into buying lower-performance chips for the same price as the last, more powerful, generation (for the same price).