Intel has a new tweak on the 9900K, the 9900KS - All core 5GHz - all the time. Are they trying to preempt something?
https://www.anandtech.com/show/14402/intel-announces-5-ghz-all-core-turbo-cpu
https://www.anandtech.com/show/14402/intel-announces-5-ghz-all-core-turbo-cpu
Last year, Intel showcased a CPU during its keynote a processor with all of its cores at 5 GHz. Today, that becomes a reality – Intel is set to launch a processor that promises that frequency in any scenario. The new Core i9-9900KS is an 8-core processor that will run at 5.0 GHz during single core workloads and multi-core workloads.