I am already running an i3 7100 in my b150 mobo and I'm thinking on upgrading to an i7. The 7700k is 15€ more expensive than the 7700. Will the 7700k run at its 4.2GHz or will it be limited by the non-z chipset? Should I migrate the entire system to AM4 or even wait for another processor lineup and upgrade my system then? Thanks in advance.