Mobile processor
A mobile processor is  found in  mobile computers and cellphones.

A CPU chip is designed for portable computers to run fanless, under 10-15W, which is cool enough without a fan. It is typically housed in a smaller chip package, but more importantly, in order to run cooler, it uses lower voltages than its desktop counterpart and has more sleep mode capability. A mobile processor can be throttled down to different power levels or sections of the chip can be turned off entirely when not in use. Further, the clock frequency may be stepped down under low processor loads. This stepping down conserves power and prolongs battery life.

See also 
 ARM architecture
 HiSilicon
 Samsung Exynos
 MediaTek
 Qualcomm Snapdragon
 List of Intel Core M microprocessors
 Embedded processor
 Notebook processor
 System on a chip
 Ultra-low-voltage processor

References 

Mobile computers
Mobile phones
Microprocessors