Will these sticks work together

Tradesman1

Legenda in Aeternum
If they play nice, they should run dual channel, start with the 4GB sticks in slots 1-3 and the 8GB in slots 2-4 - that way you have 12GB in each channel - the mobo should be Flex mode capable so all it does is look for an equal amount of DRAM and runs that in dual...if it were 3 8GB sticks and a 4GB and they all played nice, then you would be running 16GB in dual and the odd 12GB in single at the same time