I have a i5-4670K and a MSI Z87-G45 Mobo and my first time overclocking I tried to overclock my CPU to 4 GHz and 1.1 CoreV. Says in the bios it's running at those settings so I wanted to validate that by downloading CPU-Z, which told me core speed is 3.4 GHz. I don't know if I overclocked incorrectly but is there another way to validate my core speed? My temps seem to be the same too so my bios may be lying to me.