Comparison of ZOTAC GeForce GTX 1070 AMP Extreme video card vs ZOTAC GAMING GeForce GTX 1660 6GB GDDR5 video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 AMP Extreme runs at 1.632 GHz+ 8 % base clock speed and has 8 GB of GDDR5 memory, while video card ZOTAC GAMING GeForce GTX 1660 6GB GDDR5 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 250 W+ 67 %, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.