The AMD RX 6600 is the objective winner of this comparison, securing victory in eight out of thirteen measured categories. Its most significant technical advantage over the AMD RX 470 is its FP16 performance, which is 262% higher. While the older card maintains a lead in memory bus width, the substantial gains in floating-point processing power make the newer model the superior choice across the majority of the evaluated specifications.

Users prioritizing raw computational efficiency and modern processing capabilities should select the AMD RX 6600 for its massive lead in FP16 performance. Conversely, the AMD RX 470 remains a viable option for specific use cases that rely heavily on a wider memory bus, where it offers a 100% advantage over its successor. Choose the former for overall technical superiority or the latter if your specific workload demands the increased memory bus width provided by the older architecture.