Comparison of Palit GeForce GTX 1080 GameRock Premium video card vs KFA2 GeForce GTX 1660 Prodigy video card by specifications and benchmarks. Palit GeForce GTX 1080 GameRock Premium runs at 1.746 GHz+ 9 % base clock speed and has 8 GB of GDDR5X memory, while video card KFA2 GeForce GTX 1660 Prodigy 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.