$ Bottom line: Which one is better?
Bottom line: Intel Core i5-7600K is a better device.
In review of i5 -7500 vs i5-7600K features, Intel Core i5-7600 proves to be better because it has 11.76% faster CPU speed, 0.4GHz higher turbo clock speed, 1076 higher PassMark result, 266 higher PassMark result (single), 50MHz faster GPU turbo speed, and 4 higher clock multiplier.
Intel Core i5-7500 vs Intel Core i5-7600K: GENERAL INFO
GPU clock speed; Intel Core i5-7500 has 350MHz the same as Intel Core i5-7600K.
DirectX version; both Intel Core i5-7500 and Intel Core 7600K have 12.
Thermal design power (TDP); Intel core i5-7500 has 65w whereas Intel Core i5-7600k has 91W.
Supports 64-BIT; both Intel Core i5-7500 and Intel Core i5-7600K supports 64-BIT.
Semiconductor size; both have 14nm.
GPU turbo; Intel Core i5-7500 has 1100MHz while Intel Core i5- 7600k has 1150MHz.
Bottom line: Intel Core i5-7600K is a better device with a greater GPU turbo and thermal Design Power.
Intel Core i5-7500 vs Intel Core i5-7600K: PERFORMANCE
CPU speed; Intel Core i5-7500 has 4 × 3.4GHz while Intel Core i-7600K has 4 × 3.8GHz.
L2 cache; both have 1MB.
L3 cache; the two devices have 6MB each.
CPU threads; both have 4 CPU threads.
L1 cache; they both have 256KB
L2 Core; the two devices have 0.25MB/core.
Bottom line: Intel Core i5-7600k is better in performance with a greater CPU speed.
Intel Core i5-7500 vs Intel Core i5-7600K: MEMORY
RAM speed; Intel Core i5-7500 and Intel Core i5-7600K have both 2400MHz.
Maximum memory bandwidth; both Intel Core i5-7500 and Intel Core i5-7600K have 38.4GB/s.
Memory channels; both have 2 memory channels.
Maximum memory size; both have memory sizes of 64GB.
Bus transfer rate; both Intel Core i5-7500 and Intel Core i5-7600K have 8GT/s.
Bottom line: Intel Core i5-7600K is a better device.
Intel Core i5-7500 vs Intel Core i5-7600K: KEY FEATURES
Both Intel Core i5-7500 and Intel Core i5-7600K have dynamic frequency scaling, AES, supports hardware-assisted virtualization, have tri-gate transistors and AVX. They have SSE version of 4.2.
Bottom line: Intel Core i5-7600K is a better device.
Intel Core i5-7500 vs Intel Core i5-7600K: BENCHMARKS
PassMark result; Intel Core i5-7500 has 8201 whereas Intel Core i5-7600K has 9277.
PassMark result (single); Intel Core i5-7500 has 230 whereas Intel Core i5-7600K has 2396.
Bottom line: Intel core i5-7600K has a better benchmark than Intel Core i5-7500.
Conclusion
To wrap it up, the two seem to have tight comparison but Intel Core i5-7600K wins as it has a greater Thermal Design Power and a better benchmark.