Hello i have a 2x8 ddr4 kit 2400mhz and a 2x4 ddr4 kit 2666mhz of the same brand (crucial) and both cl16 will i be able to run them 2x8 2400mhz dual channel and second dual channel of 2x4 2400mhz? i guess the second kit will not run 2666mhz cause the other is 2400mhz