DDR5 memory - Who needs it and why?

Aurora R12, motherboard support DDR5 memory? can you use ddr5 in ddr4 slot But it's generally not recommended to mix different memory sticks because you can't be sure without testing If three stick config works without can you win real money on slot apps for that you would @roushrsh​ DDR5 modules do not fit in DDR4 slots and vice versa So it's not possible to use DDR5 in a DDR4 slot

candy stars 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