This new record was set at the Kingston HyperX OC Takeover World Finals where the team used a Z97X-SOC FORCE LN2 motherboard. Humorously, but not without reason, the overclockers also used oscilloscopes to demonstrate the true frequency of the memory. Given that there are reports going around that it may be possible to post false frequencies to HWBOT, the team felt that this was the only way to truly demonstrate that they set a world record. Their efforts certainly deserve some admiration. (Don't mind the blue screen of death at the end of the video below.)
Of course, we can't help but question the practical uses of overclocks such as this, but it does tell you that these high-end overclocking motherboards and memory components are built to sustain impressive clocks. You do need liquid nitrogen for cooling to be able to achieve this. Beyond having a company sponsor all the required hardware, you'll also need a ton of patience and skill.