Overclocking is always fun and almost everyone can do it, however, when it comes to extreme overclocking, there are only a handful of persons doing it. Today, a Chinese extreme overclocker "baby-j" has managed to establish a new world record frequency with his Crucial Ballistix Max DDR4-4000 (BLM16G40C18U4B.M8FB1) memory kit. Using liquid nitrogen (LN2) cooling for the DIMMs, the overclocker managed to push the memory kit to an amazing 7004.2 MHz, making it the world's highest frequency hit on DDR4 memory. What is more amazing is the fact that the platform used for the new record-setting overclock, is based on AMD's B550 motherboards running with AMD Ryzen 5 PRO 4650G processor, which seems to have a very good memory controller. The timings were a bit relaxed with them running at 22-26-26-46-127-1 (tCAS-tRC-tRP-tRAS-tCS-tCR) settings.