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 4800 MHz. In all honesty I did not expect to get much more out of this memory. But I was able to get the kit to boot at 5000 MHz by bumping the voltage up to 1.55v.
Most our test ran fine, but when we went to run 3DMark we ran into issues.