The AMD RX 9060 XT 8 GB is the objective winner of this comparison, securing victories in nine out of thirteen measured categories. Its most significant technical advantage is its FP32 performance, which is 410% higher than that of the NVIDIA GTX 1660 SUPER. This substantial lead in raw computational throughput establishes the AMD RX 9060 XT 8 GB as the superior option for users prioritizing modern processing capabilities over the specific architectural features found in the alternative.

Users who require maximum raw computational power should choose the AMD RX 9060 XT 8 GB to leverage its massive advantage in FP32 performance. Conversely, the NVIDIA GTX 1660 SUPER remains a viable alternative for specific use cases that rely on a wider memory bus, as it holds a 50% advantage in that category. Select the former for general processing superiority or the latter if your specific workload demands the wider memory bus configuration provided by the NVIDIA hardware.