Comparison of ZOTAC GeForce GTX 1070 Mini video card vs Gainward GeForce GTX 1660 Ghost video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 Mini runs at 1.518 GHz+ 1 % base clock speed and has 8 GB of GDDR5 memory, while video card Gainward GeForce GTX 1660 Ghost runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 150 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.