The Z490 motherboard uses 1200 CPU soket and work with 10th Gen Intel Core processor. Some Z490 motherboards also uses LGA 1155 CPU socket. So, you should with i9 10090k processor. The Core i9-10900K delivers outstanding gaming performance and holds its own in single-core workloads. With 10 cores and 20 threads and a boost frequency that goes all the way up to 5.3GHz, this is one of the fastest processors Intel has ever introduced.