It is all about the 7nm and die-area
Wafers are very expensive, especially for the 7nm leading-edge process, and 10nm is not cheap either. If you need to use a device in a battery-operated environment, then power consumption plays a critical role. But Qualcomm thinks that 5G deployment is happening much faster than was the case with 4G and wants to expand the reach to the Snapdragon 700 and even 600 series.
8nm and 10nm 2+6 cores
Qualcomm is expected to launch its 700 series rather soon and the latest leaks describe two rather robust products coming soon. The Snapdragon 700 series was launched by Cristiano Amon, the company’s president at the Mobile World Congress 2018 without going into any details.