Question: what is the difference between ddr3 and ddr4 laptop ram?
Answer: The first noticeable difference between the two RAM-types is the physical layout of the pins on each module. DDR3 RAM uses a 240-pin connector, while DDR4 RAM uses a 288-pin connector. Why are they different? A motherboard and CPU that work with DDR3 RAM don't work with DDR4 RAM and vice versa.