Note that those are overclocked out of spec configurations today. https://ark.intel.com/content/www/us/en/ark/products/134599/intel-core-i912900k-processor-30m

Note that those are overclocked out of spec configurations today. https://ark.intel.com/content/www/us/en/ark/products/134599/intel-core-i912900k-processor-30m-cache-up-to-5-20-ghz.html https://ark.intel.com/content/www/us/en/ark/products/134599/... 4800 MT/s is the actual maximum spec, anything beyond that is OC.