hyperx fury ddr4 2400mhz

Hello I oc my hyper x fury 2x4 gb ram 2400(stock speed) to 2933 with the same timing (15-15-15-34) and same voltage 1.2 i tested it with memtest86 and there were no errors but i would like to know if that's normal that on cpu-z next to DC mode it is blank is the dual channel mode working fine...