Basically, my i7-4770 is running at 3.4GHz. I want it to run at 3.9GHz, it let's me change the ring frequency to 3.9GHz but not the actual CPU frequency. How can I do this?
you cant. you have to set bios to enable turbo mode and this will cause the cpu to accelerate up to 3.9 providing you have the required cooling.
you cant overclock the 4770 nor unlock it.