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.
More Windows Administration Information:
• How to Setup a VPN Between Two Computers
• How to Setup DHCP (Dynamic Host Configuration Protocol) on a Windows Server
• Turn Off Windows XP Service Pack 2 Firewall
• How to Reset Windows 7 Password
• Configuring Windows as a NTP (Network Time Protocol) Server
• Introduction to Windows PowerShell
• Restrict Web Browsing With Internet Explorer
• What Is Virtualization and What Are the Benefits?
• Microsoft Licensing Explained
• Guide To Setting Up Dual Monitors
