Comparison of ZOTAC GeForce GTX 1070 AMP Extreme Core video card vs Colorful GeForce GTX 1660 NB 6G-V video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 AMP Extreme Core runs at 1.607 GHz+ 7 % base clock speed and has 8 GB of GDDR5 memory, while video card Colorful GeForce GTX 1660 NB 6G-V 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.