CPU-Z is a famous freeware utility for windows which will help you to get the details of your Hardware.
Name and number.
Core stepping and process.
Internal and external clocks, clock multiplier.
Supported instruction sets.
Vendor, model and revision.
BIOS model and date.
Chipset (northbridge and southbridge) and sensor.
Frequency and timings.
Module(s) specification using SPD (Serial Presence Detect) : vendor, serial number, timings table.
Windows and DirectX version.
You may get this for windows from here
CPUID, the developer of CPU-Z is released an android version of the CPU-Z which will help you to get details like
SoC (System On Chip) name
clock speed for each core
device brand & model
Read more get the CPU-Z for android from play store