foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_ComputerSystem").Get())
{
 Console.WriteLine("Number Of Physical Processors: {0} ", item["NumberOfProcessors"]);
}

int coreCount = 0;
foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_Processor").Get())
{
 coreCount += int.Parse(item["NumberOfCores"].ToString());
}
Console.WriteLine("Number Of Cores: {0}", coreCount);

foreach (var item in new System.Management.ManagementObjectSearcher("Select * from Win32_ComputerSystem").Get())
{
 Console.WriteLine("Number Of Logical Processors: {0}", item["NumberOfLogicalProcessors"]);
}