ddr5 ram memory is better 1 or 2?

ASUS Demonstrates DDR5 to DDR4 Converter Card ddr4 and ddr5 same slot The problem is that DDR5 RAM is NOT compatible with DDR4 RAM, and vice versa: Reminder: DDR4 RAM Won't Fit Into DDR5 Slots and Vice ddr4 slot Buy X299 or threadripper for quad channel memory Also DDR4 is going to be replaced in the coming years for DDR5, so spending $600 on DDR4 isn't recommendable

ddr4 in ddr5 slot No, this implies DDR4 and DDR5 are not the same and there are no different RAM slots on a motherboard