The NVIDIA RTX 5060 Ti 8 GB is the objective winner of this comparison, securing victory in ten out of thirteen measured specifications. Its most significant advantage over the NVIDIA GTX 1660 Ti is its FP32 performance, which is 336% higher. This substantial lead in raw computational power establishes the newer card as the superior option for modern processing demands, despite the older model maintaining a 50% advantage in memory bus width.

Users prioritizing raw computational throughput should choose the NVIDIA RTX 5060 Ti 8 GB to leverage its massive FP32 performance lead. Conversely, the NVIDIA GTX 1660 Ti remains a niche consideration only for specific workflows that rely heavily on a wider memory bus. Most modern applications will benefit more from the significant performance gains offered by the newer architecture, making it the clear choice for general high-performance computing tasks.