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 3600 MHz. In the BIOS I started moving up the frequency divider without changing the timings or voltage. I was able to get up to 3800 MHz without changing anything. At 3900 MHz the system would not boot, but a slight bump in voltage to 1.4V gave us a stable system. We were not able to get past 3900 MHz.