The NVIDIA GTX 1660 SUPER is the objective winner of this comparison, securing victories in seven out of thirteen measured specifications. Its most significant technical advantage over the AMD RX 570 is its FP16 performance, which is 97% higher. While the AMD RX 570 maintains a notable lead in shader units with a 45% advantage, the overall hardware configuration of the NVIDIA GTX 1660 SUPER provides a more robust set of specifications across the majority of categories.

Users prioritizing raw FP16 performance should select the NVIDIA GTX 1660 SUPER for their system. Conversely, those who specifically require the higher shader unit count provided by the AMD RX 570 will find that component better suited to their needs. Choosing between these two options depends entirely on whether your specific workload benefits more from the superior FP16 capabilities of the NVIDIA card or the increased shader density offered by the AMD alternative.