Yea but the problem is that Asrock announced X370 gaming X board which is the same as K4, it doesn`t have USB 3.1 but have better memory support (3200mhz). I think that K4 have some hardware error that doesn`t let her go with 3200mhz. Why would they announce Gaming X board if it is the same as K4. Also on this forum users are not very confident that K4 will support 3200mhz: