The Intel Arc B580 is the objective winner of this comparison, securing victories in ten out of thirteen measured specifications. Its most significant advantage over the AMD RX 480 is its FP16 performance, which is 369% higher. While the AMD RX 480 maintains a 33% lead in memory bus width, the Intel Arc B580 dominates the majority of the technical categories evaluated, establishing itself as the superior option based on the provided data.

Users prioritizing raw computational throughput should select the Intel Arc B580 to leverage its substantial FP16 performance advantage. Conversely, the AMD RX 480 remains the appropriate choice for those who specifically require the wider memory bus provided by that hardware. By focusing on these distinct technical strengths, buyers can align their selection with the specific architectural benefits offered by each individual graphics card.