Core i5-8600K has performance similar to Core i7-7700K
Core i5-10400 vs Core i7-8700K Wolfenstein II Benchmarks - CPUAgent
Core i7-6700K vs Core i5-10400 Bottleneck: RTX 3060 Ti Analysis - CPUAgent
i7-7700K vs. i5-10400F | How Much Performance Difference? - YouTube
Intel Core i5-7600 vs i7-7700K
Intel Core i5-10400 6-core CPU pictured, NDA information leaked : r/hardware
540 Mobile Rocket League benchmark with Intel Core i7-7700K @ 4.20GHz at Ultra Quality: 1080p, 1440p, Ultrawide, 4K Performance Benchmarks - GPUCheck United States / USA