Comparison of Gainward GeForce GTX 1060 3GB video card vs KFA2 GeForce GTX 1060 OC 6GB GDDR5X video card by specifications and benchmarks. Gainward GeForce GTX 1060 3GB runs at 1.506 GHz base clock speed and has 3 GB of GDDR5 memory, while video card KFA2 GeForce GTX 1060 OC 6GB GDDR5X runs at 1.518 GHz+ 1 % base clock speed and has 6 GB of GDDR5X 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.