Comparison of ZOTAC GeForce GTX 960 AMP! Edition 4GB video card vs KFA2 GeForce GTX 1660 Ti EX (1-Click OC) video card by specifications and benchmarks. ZOTAC GeForce GTX 960 AMP! Edition 4GB runs at 1.266 GHz+ 12 % base clock speed and has 4 GB of GDDR5 memory, while video card KFA2 GeForce GTX 1660 Ti EX (1-Click OC) runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 120 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.