According to the "Jedec JESD79-3D" standard, SPD speed of DDR3 memory is limited by 2133 Mhz. But I can`t find any memory stick with capacity 8 Gb and such speed on the market among many producers. They suggest only memory, in wich XMP profiles are realized, but my motherboard doesn`t support XMP profiles of memory. I`ve spent so much time already... Please, help me.