The AMD RX 7600 XT is the objective winner of this comparison, securing victory across eight of the fourteen evaluated specifications. Its most significant advantage over the NVIDIA RTX 3090 is its AV1 encoding capability, which provides a 100% improvement in that specific metric. While the competition holds fewer category wins, it maintains a substantial lead in raw processing potential, specifically offering a 413% advantage in shader units compared to the AMD RX 7600 XT.

Choose the AMD RX 7600 XT if your primary focus is on modern encoding workflows, as its superior AV1 support offers a distinct functional edge. Conversely, the NVIDIA RTX 3090 is the better selection for users who prioritize raw computational power, as its massive advantage in shader units makes it the clear choice for tasks that rely heavily on high-density parallel processing capabilities.