Tenho uma placa mãe z390, um processador i7 8700 e kits de memórai ram 2666mhz. Porém, apenas 2400mhz é reconhecido pelo sistema. O que posso fazer para reconhecer a frequência de memória padrão suportada pelo processador?

[n_scott_pearson]

This typically occurs if there are issues running at the higher speed. This can be caused by issues with the DIMMs, issues with the Processor or (most likely) issues with the motherboard. The only way to know the cause is through replacement of the components involved. Simplest thing to try is reducing to use of a single DIMM and try it in various DIMM slots.

Hope this helps,

...S