The NVIDIA GTX 1070 and the NVIDIA GTX 1660 are tied in this objective comparison, as each component leads in six out of thirteen measured specifications. The most significant advantage for the NVIDIA GTX 1070 is its shader unit count, which is 36% higher than that of its competitor. Conversely, the NVIDIA GTX 1660 offers a massive technical lead in FP16 performance, boasting a 9950% improvement over the NVIDIA GTX 1070.

Choose the NVIDIA GTX 1070 if your primary requirement is a higher shader unit count for your specific computing tasks. Alternatively, select the NVIDIA GTX 1660 if your workflow relies heavily on FP16 performance, where it provides a substantial advantage. Because these components are evenly matched across the majority of specifications, your final decision should depend entirely on whether your workload prioritizes the shader capacity of the former or the FP16 capabilities of the latter.