For anyone interested in obtaining DDR5 memory for their upcoming Alder Lake build, a leak of certified RAM has surfaced on Twitter, which should provide you with an indication of what to expect when ... List of DDR5 modules that have been verified to work with Intel Alder Lake leaks
4800 cl40 seems a bit weak sauce to me . A good ddr4 kit most likely will perform better till ddr 5 matures enough to overtake em i guess