The type of RAM that the lga1151 socket and latest coffee lake chipset supports is; DDR4
From specifications for the latest Coffee Lake chipsets (300 series and C240 series), the only RAM that it supports is DDR4.
For the previous versions of lga1151 socket, they could support DDR3 but when combine as lga1151 socket and latest coffee lake chipset, it is the 64 GB DDR4 memory that is useful.
Read more about Random Access memory at; https://brainly.com/question/86807