DDR4 uses about 30% more energy in general though, hence the thickness bit as to get a 10 hour lifetime means more battery. Presumably Apple means that lpddr i

DDR4 uses about 30% more energy in general though, hence the thickness bit as to get a 10 hour lifetime means more battery. Presumably Apple means that lpddr is the only choice they care about for a laptop. Which while I would love more ram, understand. And that explains why if you see laptops with more than 16g of ram they generally have giant batteries and are using desktop ram.