XMP on some memory kits actually makes performance worse. - YouTube
CAS Latency - Tech-FAQ
RAM : type, format, CAS, vitesse, tout sur la mémoire vive
DDR4 RAM effectiveness chart (first word access in ns) : r/pcmasterrace
Available DDR4 with Ram Effectiveness Chart : by effective latency (Please submit your Ram overclocks to help build database- details inside) : r/overclocking