This trick is really fun one since you can make your friends fool.It may also not recommended as this may cause windows to provide falsified information to it self and other applications, which would cause system stability issue and may slow down the system….
To Change the Processor Name shown in the System properties Dialog Box
Just Follow these Steps
Under Windows XP, Click Start, then RUN Command, “regedit“… (Without the quote symbols)… Now please navigate your self to this Registry location,
>HKEY_LOCAL_MACHINE > HARDWARE > DESCRIPTION > SYSTEM > CENTRAL PROCESSOR > GO TO 0
Now please double click, on the key PROCESSORNAMESTRING . Change the value as you like.Using this you can change your Processor info even from Pentium III to Quad Core but only for displaying in properties only