The AMD RX 580 and the AMD Radeon RX 6500 XT 8 GB finish in a statistical tie, as each component secures five victories across the twelve measured specifications. The most impactful advantage for the AMD RX 580 is its memory bus, which is 300% better than the alternative. Conversely, the AMD Radeon RX 6500 XT 8 GB holds a significant lead in clock speed, offering a boost clock that is 110% better than its competitor.

Users prioritizing memory bandwidth should select the AMD RX 580, as its superior bus width provides a distinct architectural advantage. Those who prioritize raw frequency should choose the AMD Radeon RX 6500 XT 8 GB, which leverages its significantly higher boost clock. Because both cards offer balanced but divergent strengths, the final decision depends entirely on whether your specific workload benefits more from the increased memory bus or the higher boost clock speed.