how to get the cpu's currentClockSpeed, minClockSpeed, maxClockSped

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Can i get the cpu's currentClockSpeed, minClockSpeed, maxClockSped.
I have use wmi to do this,but i think the result is not good.
There are no minClockSpeed,and the currentClockSpeed and maxClockSped have the same value,
The currentClockSpeed never changed.My pc's cpu is I5-2300.it support the turbo boost.
Any help will be appreciated.

Posted 6-Nov-12 16:33pm

scoket

Updated 8-Mar-23 15:52pm

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SoumenBanerjee · Answer 1 · 2012-11-06T18:18:00

You can try using this..

C#

using System;
using System.Management;
using Microsoft.Win32;
namespace ConsoleApplication1
{
        class Program
    {
        
        static void Main(string[] args)
        {
            CPUSpeed();
        }
     
        public static void CPUSpeed()
        {
            uint CurrentClockSpeed, MaxClockSpeed;
            using (ManagementObject Mobj = new ManagementObject("Win32_Processor.DeviceID='CPU0'"))
            {
                CurrentClockSpeed = (uint)(Mobj["CurrentClockSpeed"]);
                MaxClockSpeed = (uint)(Mobj["MaxClockSpeed"]);


                Console.WriteLine("CurrentClockSpeed: " + CurrentClockSpeed);
                Console.WriteLine("MaxClockSpeed: " + MaxClockSpeed);
               
                Console.ReadLine();
            }
        }
    }
    }

Christopher Hume · Answer 2 · 2023-03-08T15:52:00

The approach given above turns out to be very slow. This is most likely due to the way the queries are being fetched by the ManagementObject. One is encouraged to use the ManagementObjectSearcher instead.

An explicit query narrows the amount of data returned, and significantly improves performance:

private uint? clockSpeed() {
  uint? uSpeed = default;
  if (OperatingSystem.IsWindows()) {    // Suppress SupportedOSPlatform warnings
#if TestSlowManagementObject
    const String sPath = "Win32_Processor.DeviceID='CPU0'";
    using var mo = new ManagementObject(sPath);
    uSpeed = (uint)mo["CurrentClockSpeed"];
#else
    //[Note]Specifying the CurrentClockSpeed column improves performance
    const String sQuery = "select CurrentClockSpeed from Win32_Processor";
    using var mos = new ManagementObjectSearcher(sQuery);
    foreach (var mbo in mos.Get()) {
      var properties = mbo.Properties.Cast<PropertyData>();
      var pd = properties.FirstOrDefault(pd =>
        OperatingSystem.IsWindows() &&
        pd.Name == "CurrentClockSpeed");

      if (pd != null) {
        uSpeed = (uint)pd.Value;
        break;
      }
    }
#endif
  }
  return uSpeed;
}

how to get the cpu's currentClockSpeed, minClockSpeed, maxClockSped

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