Comparison of ASUS TUF Gaming X3 GeForce GTX 1660 video card vs KFA2 GeForce RTX 3080 EX Gamer (1-Click OC) LHR video card by specifications and benchmarks. ASUS TUF Gaming X3 GeForce GTX 1660 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card KFA2 GeForce RTX 3080 EX Gamer (1-Click OC) LHR runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 120 W, and the second is 320 W. Compare the table of benchmark results to find out which graphic card is better.