R5 5600X matches i5-2600k in average gaming performance for over $100 less (i5 12600k $320+$70 board premium vs R5 5600X $280 vs R7 5800X $300 at microcenter) : r/AyyMD
Intel i7-2600K Revisit: 2018 Benchmarks vs. 9900K, Ryzen, & More | GamersNexus - Gaming PC Builds & Hardware Benchmarks