Ram oc
Ram oc
Your system supports OC 4000 MHz in the motherboard, but your CPU is only rated for 2666 MHz. To maintain 3000 MHz RAM operation, ensure your CPU supports that speed or consider upgrading to a compatible processor. If you must stick with 2666 MHz, verify your RAM is indeed 2666 MHz or higher.
No processor without a K at the end can support faster RAM, as Intel specifies this requirement. Unfortunately.