Real CPU Speed is show on registry subkey,
Check CPU Speed is so easy that we can get it in a Minute. Although there are a number of Softwares to check a computer’s CPU speed, we don’t need download any Software to get CPU Current Speed and Max Speed.
We can use the system Information utility, DirectX Diagnostic Tool, the WBEMTEST test and System Monitor find CPU speed, but a convenient method is in basic registry.
A free method for Check CPU Speed steps
1. First Open the following registry subkey:
HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0
2. Get our CPU Speed form ~MHz and ProcessorNameString
See my CPU Speed check image
Check "MaxClockSpeed" and "CurrentClockSpeed"
MaxClockSpeed get from ProcessorNameString
ProcessorNameString: Intel(R) Celeron(R) CPU 2.2GHz
My Maxclockspeed is 2.2 GHZ
CurrentClockSpeed get from ~MHz
~MHz: 0x000006a4 (1792)
My Current clock speed is 1.792GHz
Get more Methods for check CPU Speed from microsoft.com
Different ways to determine CPU speed in Windows XP or in Windows Server 2003
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