I just leave this i9 9900k vs i7 5820k Star Citizen benchmark here in case someone is interested in. Its testet between 3.2 (no OCS) and 3.3 (w/ OCS). Read the notes
Intel's new 9000 series: i9-9900K, i7-9700K and i5-9600K vs i7-8700K and Ryzen 7 2700X - pc-kombo blog
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Intel i9 9900K vs I7 9700K Vs i7 8700k Vs Ryzen 7 2700X Featuring Nvidia RTX 2080 Ti - YouTube
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Intel Core i9-9900K and Core i7-9700K Review | TechSpot
Intel Core - Wikipedia
Should I upgrade from an i7 8700k to an i9 9900k? - Quora