DDR3 and DDR4 RAMs One DDR4 and the rest are DDR3 The DDR4 is 8 and the DDR3 in each unit is 4, meaning there are 20 of them. And there are two more, two DDR3, each unit has two. So all of them with the 8 is 32. Please communicate only through the platform. Miscellaneous. Communicate via the number. Please, no one call or send messages to the number.