The AMD RX 7900 XT is the objective winner of this comparison, securing victory in ten out of fourteen measured specifications. Its most significant technical advantage over the NVIDIA RTX 3080 12 GB is its FP16 performance, which is 236% higher. This substantial lead in floating-point processing capability positions the AMD RX 7900 XT as the superior choice for tasks that rely heavily on this specific metric, outperforming the NVIDIA RTX 3080 12 GB across the majority of evaluated categories.

Users prioritizing raw computational throughput and the specific benefits of superior FP16 performance should select the AMD RX 7900 XT. Conversely, the NVIDIA RTX 3080 12 GB remains a viable alternative for those who specifically require a higher count of shader units, where it maintains a 67% advantage. Choosing between these two components depends on whether your specific workload demands the high-speed floating-point processing of the AMD card or the increased shader density offered by the NVIDIA hardware.