Hello! I am building a new rig and have already bough the processor (i7 4770) but i am confused about ram, i want to install 2133MHz ram but in my mobo for 2133MHz memory (O.C.) is used which means i need to overclock the processor also (please correct if i am wrong)? But since i7 4770 have no unlocked multipliers it cannot be overclocked above 3.9GHz (its max turbo boost). Which means that i should not get 2133MHz. I want to know how to use 2133MHz in my case, how is it done - do we increase the memory multiplier or the bclk frequency . The mobo i am thinking to buy is asrock z87m exterme 4