The easiest way to overclock on the Intel platform is to simply change the frequency divider in the BIOS. To achieve the best overclock we try to stay with the timings that the XMP profile recommends. If we run into any issues we will bump up the voltage to see if we can get our system to boot and become stable.
The XMP profile puts this kit at 4000 MHz. It seemed each time I would try to go above that the system would not boot. I decided to loosen the timings to 19-22-22-43 and was able to get the kit to run at 4200 MHz.