Dual channel mode for DDR, DDR2, DDR3, DDR4 and DDR5

So my two DDR4 RAM which are same in everything, used to work Or maybe there's some crud on the contacts of either the ram sticks or the slot

DDR5 Memory or DDR4 RAM? 3600Mhz or 6000MHz? What should you buy for gaming, on

ddr4 slot 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

ddr4 in ddr3 slot 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