Comparison of NVIDIA GeForce GTX 1660 video card vs ZOTAC GeForce GTX 1060 AMP! Edition+ 6GB video card by specifications and benchmarks. NVIDIA GeForce GTX 1660 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card ZOTAC GeForce GTX 1060 AMP! Edition+ 6GB runs at 1.556 GHz+ 3 % base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 120 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.