Comparison of ZOTAC GeForce GTX 1070 Ti AMP Edition video card vs GALAX GeForce GTX 1660 EX (1-Click OC) video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 Ti AMP Edition runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GALAX GeForce GTX 1660 EX (1-Click OC) runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 180 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.