Gaming benchmarks : AMD Ryzen 9 3900X vs. Ryzen 7 3700X vs. Intel Core i9- 9900K: Which is the best gaming CPU? - HardwareZone.com.sg
AMD Ryzen 9 3900X vs Intel Core i9-9900K: Which CPU Is Better? - Tom's Hardware | Tom's Hardware
AMD Ryzen 9 3900X: A challenger for Intel's CPU crown
AMD Ryzen Threadripper Zen 2 scores over 2x the Ryzen 9 3900X in Geekbench; more than 2.5x times higher than the Threadripper 2950X and Core i9-9900K too - NotebookCheck.net News
Intel Core i9-9900K Review: Welcome to an Intel-AMD 8-Core Slugfest - ExtremeTech