The silicon transistor continues to be at the heart of post-PC era products like the smartphone, the tablet and the smartwatch. However, the success metrics for the transistor are quite different now than they have been in the past.Frequency (clock-speed) was the primary metric in the PC era and the standalone central processing unit (CPU) was the primary chip that drove advancements in semiconductor technology for decades. Form-factor was hardly an influencer and there wasn’t as much of a drive to integrate system-level functionality either on-chip (SoC) or in-package (SiP)…

Source: How the SoC is Displacing the CPU – Medium