The AMD Ryzen 5 8500G is the objective winner of this comparison, securing victories in eleven out of fourteen measured specifications. Its most significant technical advantage is the L2 cache, which is 300% larger than that of the Intel Core i5-8600K. This substantial cache capacity provides the primary performance edge for the newer processor, far outweighing the minor differences found in other areas of the hardware architecture.

Users prioritizing modern architecture and superior cache capacity should select the AMD Ryzen 5 8500G for their build. Conversely, the Intel Core i5-8600K remains a niche choice for those specifically requiring a 3% higher base clock speed. Given the overwhelming lead in total spec wins, the former is the more versatile option for most computing tasks, while the latter is only suitable if that specific clock frequency advantage is a strict requirement for your system.