The new G.Skill TridentZ RGB DC DDR4 memory features double the number of memory chips of a conventional design, with doubled EPROM control and doubled power management.
As mentioned in the introduction, this is essentially two modules on a single PCB.
In order to make this system work, the 288-pin layout is slightly different from the regular DDR4 memory pin layout, which is why these modules require per-motherboard firmware updates and validation.
The G.Skill TridentZ RGB DC UDIMMS use Samsung B-Die ICs which are considered by many to be the best around, but not just in performance
The way the DC memory is laid out within the ASUS UEFI BIOS is as if it's operating with two sticks of memory per one physical module.