The AMD Ryzen 9 9950X is the objective winner of this comparison, securing victory in ten out of fourteen measured specifications. Its most significant technical advantage over the AMD Ryzen 5 3600X is its L2 cache, which is 433% larger. While the older processor maintains a lead in three categories, the newer model dominates the majority of the technical fields, establishing itself as the superior component based on the provided data.

Users prioritizing raw technical capacity and the substantial L2 cache advantage should select the AMD Ryzen 9 9950X for their build. Conversely, those who prioritize the MSRP advantage of the AMD Ryzen 5 3600X, which is 62% better than the alternative, will find it the more suitable choice. Your decision should depend on whether you value the significant cache capacity of the newer model or the cost-efficiency represented by the lower MSRP of the older unit.