C# - Anzahl physikalischer Prozessoren ermitteln

private int AnzahlPhysikalischeProzessoren()
{
    ManagementClass mc = new ManagementClass("Win32_Processor");
    ManagementObjectCollection moc = mc.GetInstances();
    string SocketDesignation = string.Empty;
    List<string> PhysCPU = new List<string>();

    foreach (ManagementObject mo in moc)
    {
        SocketDesignation = mo.Properties["SocketDesignation"].Value.ToString();
        if (!PhysCPU.Contains(SocketDesignation))
        {
            PhysCPU.Add(SocketDesignation);
        }
    }
    return PhysCPU.Count;
}