The NVIDIA RTX 2060 is the objective winner of this comparison, securing more individual specification victories than the NVIDIA GTX 1660 Ti. The most impactful advantage for the RTX 2060 is its shader unit count, which provides a 25% improvement over the alternative. While the GTX 1660 Ti maintains a 25% advantage in thermal design power, the overall hardware configuration favors the superior processing capabilities found in the RTX 2060.

Users prioritizing raw processing power should select the NVIDIA RTX 2060 to take advantage of its higher shader unit count. Conversely, those building systems where power efficiency is the primary concern should choose the NVIDIA GTX 1660 Ti, as it offers a significant 25% improvement in thermal design power. Your final decision should depend on whether your specific build requirements prioritize maximum computational throughput or reduced power consumption.