How to get CPU frequency in c#

Question

How can I get in c# the CPU frequency (example : 2Ghz) ? It\'s simple but I don\'t find it in the environnement variables. Thanks :)

Answer 1

You can get it via WMI, but it's quite slow so if you're going to be getting it on more than one occasion I'd suggest you cache it - something like:

namespace Helpers
{
    using System.Management;

    public static class HardwareHelpers
    {
        private static uint? maxCpuSpeed = null;
        public static uint MaxCpuSpeed
        {
            get
            {
                return maxCpuSpeed.HasValue ? maxCpuSpeed.Value : (maxCpuSpeed = GetMaxCpuSpeed()).Value;
            }
        }

        private static uint GetMaxCpuSpeed()
        {
            using (var managementObject = new ManagementObject("Win32_Processor.DeviceID='CPU0'"))
            {
                var sp = (uint)(managementObject["MaxClockSpeed"]);

                return sp;
            }
        }
    }
}