WMIC (Windows Management Interface Command) is a command line tool that returns
information about the system where it's run. To open a command line shell, at the
bottom of the screen, left side of the taskbar, in the Windows search text box,
type cmd. In the menu that appears, select Command Prompt. To learn your computers
model, vendor, and serial number, type the command shown below at the command prompt.
wmic cpu get deviceid,numberofcores,numberoflogicalprocessors
This will return the number of Cores/Logical Processors for each CPU on your machine.