The AMD RX 6600 is the objective winner of this comparison, securing seven spec victories against the three held by the AMD RX 570. While the latter maintains a significant lead in memory bus width, which is 100% better than its counterpart, the former dominates in computational efficiency. The most impactful advantage for the AMD RX 6600 is its FP16 performance, which is 251% better than that of the AMD RX 570.

Users prioritizing raw computational throughput should select the AMD RX 6600 to take advantage of its superior FP16 performance. Conversely, the AMD RX 570 remains a viable choice for specific workloads that rely heavily on a wider memory bus. Your final decision should depend on whether your primary requirements favor the modern computational architecture of the newer card or the specific memory bus configuration offered by the older model.