Solution
The cpu decreases the multiplier when it's idle (not working hard) to save power.

Do something cpu intensive like open 20 Internet Explorer pages as fast as you can and you'll see the multiplier and clock speed rise.

You don't need to change voltage to overclock.
The cpu decreases the multiplier when it's idle (not working hard) to save power.

Do something cpu intensive like open 20 Internet Explorer pages as fast as you can and you'll see the multiplier and clock speed rise.

You don't need to change voltage to overclock.
 
Solution