Comparison of KFA2 GeForce GTX 1070 Ti EX video card vs EVGA GeForce GTX 1660 XC BLACK GAMING video card by specifications and benchmarks. KFA2 GeForce GTX 1070 Ti EX runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 memory, while video card EVGA GeForce GTX 1660 XC BLACK GAMING 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.