DDR5-U DIMM modules have the same dimensions and the same number of contacts as DDR4 modules. The most obvious difference is the position of the notch, which makes incorrect insertion impossible. DDR5 also integrates I/O resistors with CMD/ADD resistors. In addition, DDR5 modules have a cleaner look than DDR4 modules. And you can see a PMIC in the middle.
DDR5 modules offer twice more capacity than DDR4 by integrating more banks and bank groups. In addition, will also be