The AMD Ryzen 9 3900X is the objective winner of this comparison, securing victory across eight of the fourteen measured specifications. Its most significant technical advantage is the L3 Cache, which is 433% larger than that of the alternative. This substantial capacity for data handling positions the processor as the superior choice for tasks requiring extensive cache resources, outperforming the Intel Core i3-12100F in the majority of the evaluated hardware metrics.

Users prioritizing raw processing capacity and cache-heavy workloads should select the AMD Ryzen 9 3900X for its clear lead in technical specifications. Conversely, the Intel Core i3-12100F is the appropriate choice for budget-conscious buyers, as it offers an 81% better MSRP. Choosing between these two components depends on whether your primary requirement is the high-performance architecture of the former or the significant cost efficiency provided by the latter.