https://www.cnet.com/news/intel-launches-9th-gen-core-i9-9900k-8-core-cpu-and-more/

If you're looking for cheaper, AMD's Ryzen 2700X offers eight cores, 16 threads for less money, though we'll wait until the benchmarks are in before determining whether the tradeoffs -- if any -- are worth it.  

The i9-9900K also incorporates solder TIM, which delivers better heat dissipation properties for overclocking.