DDR3 to DDR4 Memory Upgrade Path comparsion

Memory - Ram Price In Pakistan can you use ddr3 in ddr4 slot you -- Full question questions950163is-ddr4-ram-compatible-in-a can i put a slot machine in my business The Aspire E5-576G can take a max mem of 16GB and has 2x slots for the ram it can also be upgraded with an SSD 3D NAND SATA

can i use m2 pcie 40 in 30 slot All DDR memories are mutually incompatible The DDR234 DIMMs can only be used on their respective DDR234 sockets, with the notches differently located