Please look again, use GPUZ or HWinfo, with V3 CPU and Windows or BIOS does not offer ALL CORE Turbo .I usually set all my cores to max, can do this through Power Management on Windows and Bios but i would hesitate to state thats an overclock.
You may be able to hit max clock with one or more cores , but not ALL cores.
I have no interest in defining the word "overclock".
Please google all-core-turbo , and read the long running thread.