4285,6 MHz is the new DDR3 clock record
Nick Shih has repeatedly proven that he is the ace in overdrive, but now he is punished again!
The basis was provided by the ASRock OC Z87M Formula and the Intel Core i7 4770K, but the main role was obviously the Team Group Xtreem-LV-2666 memory, which was not disappointing as the speed was increased to 4285,6 MHz!
Further details on extreme overdrive here readable.
