ASRock has managed to reach an effective DDR3 memory speed of 4285.6 MHz on a Micro-ATX motherboard.
A team of overclockers consisting of Nick Shih, John Lam, and Splave has managed to set a world record for overclocking DDR3 memory. Nick Shih is ASRock's own overclocker. The motherboard that the team has used is the ASRock Z87M OC Formula and, clearly, it is living up to its name. This motherboard is a Micro-ATX motherboard that is targeted at overclockers and gamers.
The overclock that the team managed to achieve is, behold, a staggering 2142.8 MHz (effectively 4285.6 MHz). This feat was accomplished at the overclocking show at Computex. The memory module that was used was a Team Group Xtreem LV-2666 module, 4 GB in size. Timings were set at 14-31-31-50.