From a desktop/casual system builder/potential new macbook pro buyer question but will these surpass Intel's core i5/i7 offerings in single thread + power effic

From a desktop/casual system builder/potential new macbook pro buyer question but will these surpass Intel's core i5/i7 offerings in single thread + power efficiency, given Intel is stuck on 14 nm for a while? Thinking of upgrade my 2014 era stuff due to massive improvements in SSD, memory etc. but not sure its worth dropping so much money for coffee lake or just waiting for something better x86 (or ARM...)-wise.