如何在Windows 64位上檢測CPU速度？

Question

我從這里找到了以下代碼“ http://www.boyet.com/Articles/CodeFromInternet.html ”。
它返回以GHz為單位的CPU速度，但僅在32位Windows上有效。

using System;
using System.Management;

namespace CpuSpeed
{
    class Program
    {
        static double? GetCpuSpeedInGHz()
        {
            double? GHz = null;
            using (ManagementClass mc = new ManagementClass("Win32_Processor"))
            {
                foreach (ManagementObject mo in mc.GetInstances())
                {
                    GHz = 0.001 * (UInt32) mo.Properties["CurrentClockSpeed"].Value;
                    break;
                }
            }
            return GHz;
        }

        static void Main(string[] args)
        {
            Console.WriteLine("The current CPU speed is {0}", (GetCpuSpeedInGHz() ?? -1.0).ToString());
            Console.ReadLine();
        }
    }
}

我搜索了64位管理類，但沒有成功。
還有其他方法可以在64位Windows下獲得CPU速度嗎？

Answer 1

下面的代碼應該可以解決問題

  RegistryKey registrykeyHKLM = Registry.LocalMachine;
  string keyPath = @"HARDWARE\DESCRIPTION\System\CentralProcessor\0";
  RegistryKey registrykeyCPU = registrykeyHKLM.OpenSubKey(keyPath, false);
  string MHz = registrykeyCPU.GetValue("~MHz").ToString();
  string ProcessorNameString = (string)registrykeyCPU.GetValue("ProcessorNameString");
  registrykeyCPU.Close();
  registrykeyHKLM.Close();
  Console.WriteLine("{0} MHz for {1}", MHz, ProcessorNameString);

Answer 2

Binoj提供的答案的簡單版本如下。 這將返回CPU的最大時鍾速度。 請注意，如果您希望機器上的總可用周期，則應將此值乘以Environment.ProcessorCount 。

private float GetCpuClockSpeed()
{
    return (int) Registry.GetValue(@"HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0", "~MHz", 0);
}

Answer 3

我根據Binoj Antony的回答使用了以下代碼，該代碼返回每個CPU /內核的速度，而不僅僅是第一個：

Microsoft.Win32.RegistryKey registrykeyHKLM = Microsoft.Win32.Registry.LocalMachine;
string cpuPath = @"HARDWARE\DESCRIPTION\System\CentralProcessor";
Microsoft.Win32.RegistryKey registrykeyCPUs = registrykeyHKLM.OpenSubKey(cpuPath, false);
StringBuilder sbCPUDetails = new StringBuilder();
int iCPUCount;
for (iCPUCount = 0; iCPUCount < registrykeyCPUs.SubKeyCount; iCPUCount++)
{
    Microsoft.Win32.RegistryKey registrykeyCPUDetail = registrykeyHKLM.OpenSubKey(cpuPath + "\\" + iCPUCount, false);
    string sMHz = registrykeyCPUDetail.GetValue("~MHz").ToString();
    string sProcessorNameString = registrykeyCPUDetail.GetValue("ProcessorNameString").ToString();
    sbCPUDetails.Append(Environment.NewLine + "\t" + string.Format("CPU{0}: {1} MHz for {2}", new object[] { iCPUCount, sMHz, sProcessorNameString }));
    registrykeyCPUDetail.Close();
}
registrykeyCPUs.Close();
registrykeyHKLM.Close();
sCPUSpeed = iCPUCount++ + " core(s) found:" + sbCPUDetails.ToString();

隨意定制以滿足您的需求。