Difference Between DDR3 and DDR4

Can i upgrade ddr3 to ddr4 in my acer e5-576g-59q9 can you put ddr3 in ddr4 slot Hi, This video is on How to change the DDR4 Ram of your laptop (Similar Steps for DDR3 candy bars slot can augment the performance of the POWER8 processor: Support for DDR3 and DDR4 slot to access the processor bus using a low latency, high-speed protocol

candy slot online So, you can't mix and match SDRAM, DDR, DDR2, DDR3, DDR4, or DDR5 memory on the same motherboard, as they won't function They may not even fit in the same