The AMD RX 7700 XT is the objective winner of this comparison, securing a lead in nine out of thirteen measured specifications. Its most significant technical advantage is its FP16 performance, which is 600% higher than that of the NVIDIA GTX 1660. This substantial lead in computational capability establishes the former as the superior component across the majority of the evaluated hardware metrics.

Users prioritizing raw computational power and modern performance should select the AMD RX 7700 XT for its massive advantage in FP16 operations. Conversely, the NVIDIA GTX 1660 remains the better choice for power-constrained builds, as it offers a 51% better TDP. Choosing between these two components depends on whether your primary requirement is maximizing processing throughput or minimizing power consumption within your system.