The NVIDIA RTX 3090 Ti is the objective winner of this comparison, securing nine spec victories against three for the NVIDIA GTX 1660. The most significant advantage held by the RTX 3090 Ti is its FP32 performance, which is 695% better than that of the alternative. While the GTX 1660 remains competitive in specific areas, the superior computational power of the RTX 3090 Ti establishes it as the clear leader across the majority of technical categories.

Users prioritizing raw computational power should select the NVIDIA RTX 3090 Ti to leverage its massive FP32 performance advantage. Conversely, those focused on initial acquisition costs should choose the NVIDIA GTX 1660, which offers an 89% better MSRP. The decision between these two components depends entirely on whether the buyer requires the high-end processing capabilities of the RTX 3090 Ti or the significant cost efficiency provided by the GTX 1660.