The NVIDIA GTX 1070 Ti is the objective winner of this comparison, securing a lead in seven out of thirteen measured specifications. Its most significant advantage is its shader unit count, which is 73% higher than that of the alternative. This hardware superiority provides the card with a clear edge in raw processing capacity, making it the more robust option for users prioritizing core technical specifications over the specific architectural improvements found in the newer model.

The NVIDIA GTX 1660 is the preferred choice for users who specifically require high FP16 performance, where it holds a massive 7631% advantage over the competition. Conversely, the NVIDIA GTX 1070 Ti remains the superior selection for those who need the highest shader unit count for their workload. Buyers should choose based on whether their primary technical requirement is the raw shader throughput of the former or the specialized FP16 capabilities of the latter.