How to install DDR4 RAM on DDR3 Motherboard

can you use ddr3 in ddr4 slot   Dan can i use pcie 30 in 20 slot

DDR4 RAM provides many improvements from DDR3 Therefore, it is good to be able to check

DDR5 has about the same latency as DDR4 and DDR3 DDR5 octuples the maximum DIMM capacity from 64 GB to 512 GB DDR5 also All DDR memories are mutually incompatible The DDR234 DIMMs can only be used on their respective DDR234 sockets, with the notches differently located

background slot pragmatic Did you ever ask your self or just you like know this answer for DDR2 and DDR3 combination DDR3 RAM in Hindi? ddr3 fit in ddr4 in Hindi ddr4 fit in ddr3 in Hindi?