The articles goes into greater detail. Here’s the short version the A10X only shows up as a 2 Core CPU as being available at any given time Either an app is using 2 High Power Cores or 2 Low Power Cores all 4 Cores can not run at once. However the A11 Bionic has flexibility and is capable to have all 6 Cores running at the same time or independently as needed. Marking a monumental change. http://www.idownloadblog.com/2017/09/11/iphone-x-a11-six-cores/ Yet another reason I’m glad I didn’t get a 10.5” iPad Pro.