It has been bugging me for quite some years Lenovo is not making a T570 with a quad core Intel CPU but does put it in the a 14 inch model (T470P). It doesn't make sense from a thermal point of view. Why specifically Lenovo you might wonder?
Dell, being practically the only serious competitor for the Macbook, have the XPS 15 which is a nice device if they would just address the thermal issues haunting each generation. They always seem to have fan issues either spinning them up unneeded, too early, too load, too agressively or only making them silent on battery operation, as with the latest model. Or they have other noise issues like coil whine.
So if manufacturers would drop 14 inch models and go all in on 15 inch we might see some more devices rivalling Apple including good thermal management. My Mid 2015 Macbook is so very quiet during office tasks.
Sorry for the rant, which is hopefully also a bit informative.