The AMD RX 6700 XT is the objective winner of this comparison, securing victory in eight out of thirteen measured specifications. Its most significant technical advantage is its FP16 performance, which is 328% better than that of the alternative. While the AMD RX 580 maintains a lead in three categories, the superior computational throughput of the newer card establishes it as the more capable hardware option across the majority of the evaluated metrics.

Users prioritizing raw computational power and modern performance capabilities should choose the AMD RX 6700 XT to leverage its substantial lead in FP16 performance. Conversely, the AMD RX 580 remains the logical selection for budget-conscious buyers, as it holds a 58% advantage in MSRP. Those who require the most cost-effective entry point based on the provided pricing data will find the older model more suitable for their specific financial requirements.