UserBenchmark: AMD Ryzen 9 3900X vs Intel Core i9-9900K
AMD Ryzen 9 3900X vs. Intel Core i9-9900K: Which High-End CPU to Buy? | PCMag
Intel Core i9-10900K tries hard but fails to beat the AMD Ryzen 9 3900X in Corona Render Test; Zen 3 Ryzen 4000 may further relegate Intel to the backseat - NotebookCheck.net News
Ryzen 9 3900X vs. Core i9-9900K: 36 Game Benchmark | TechSpot