Comparison of ASUS Dual series GeForce GTX 1070 OC edition video card vs KFA2 GeForce GTX 1660 EX (1-Click OC) video card by specifications and benchmarks. ASUS Dual series GeForce GTX 1070 OC edition runs at 1.582 GHz+ 5 % base clock speed and has 8 GB of GDDR5 memory, while video card KFA2 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 150 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.