The AMD Ryzen 7 9800X3D is the objective winner of this comparison, securing victories in ten out of fourteen measured categories. Its most significant technical advantage is the L3 cache, which is 380% larger than that found in the Intel Core i9-10900K. This substantial disparity in cache capacity serves as the primary differentiator between the two processors, establishing the former as the superior option based on the provided specifications.

Users prioritizing cache-heavy workloads should select the AMD Ryzen 7 9800X3D to leverage its massive L3 cache advantage. Conversely, the Intel Core i9-10900K remains a viable choice for those who specifically require a higher total core count, as it offers a 25% advantage in that metric. Your final decision should depend on whether your specific computing tasks benefit more from the increased cache capacity of the newer model or the higher core count of the older unit.