The AMD Ryzen 5 8500G is the objective winner of this comparison, securing victories in ten out of fourteen evaluated categories. Its most significant technical advantage is the L2 cache, which is 300% larger than that found in the Intel Core i5-8400. This substantial increase in cache capacity provides the primary performance edge for the newer processor, as the Intel Core i5-8400 failed to outperform its competitor in any of the measured specifications.

Users prioritizing modern architecture and superior cache capacity should select the AMD Ryzen 5 8500G for their build. Because the Intel Core i5-8400 did not win a single category and tied in the remaining four, it lacks any objective advantage over the newer model. Consequently, the AMD Ryzen 5 8500G is the logical choice for anyone seeking the most capable component based on these specific technical metrics.