Looked at the prices of DDR5 memory lately? The newer, faster, all-ECC system RAM is coming down in cost slowly, but it’s nowhere near as cheap as ubiquitous DDR4 SDRAM. Plus, due to the latency advantages of hot-clocked DDR4 versus the less-expensive DDR5 modules on the market, DDR4 systems often end up faster in gaming and other client workloads

Source: Hot Hardware – Report Claims ASRock Will Launch Raptor Lake Motherboards With DDR4 Support