The NVIDIA RTX 2080 is the objective winner of this comparison, securing more total spec victories than the NVIDIA GTX 1660. The most significant technical advantage held by the RTX 2080 is its memory bandwidth, which outperforms the alternative by 133 percent. While the GTX 1660 remains competitive in specific areas, the superior throughput provided by the RTX 2080 establishes it as the more capable hardware option based on the provided specifications.

Users prioritizing cost-efficiency should select the NVIDIA GTX 1660, as it offers a 69 percent advantage in MSRP compared to the competition. Conversely, those who require maximum memory bandwidth for their specific computing tasks should choose the NVIDIA RTX 2080. By evaluating these two primary differences, buyers can align their purchase with either a focus on initial acquisition cost or a preference for the higher memory performance offered by the RTX 2080.