This message was posted on behalf of Intel Corporation
Thank you for contacting the Intel community.
Your processor is fine, this frequency that it shows is ok, your processor frequency is 3.40 GHz as you can see at the processor specifications, your processor is able to reach up to 3.80 GHz with the Turbo Boost frequency but this frequency only works when the system needs it. It is not active all the time or when idles, your processor can run at a higher frequency than 3.40 Ghz if applications that you run requires it, other than that it will stay around 3.40 Ghz.
I hope this helps,