Comparison of ASUS Dual GeForce GTX 1660 TI EVO video card vs Gainward GeForce RTX 2080 video card by specifications and benchmarks. ASUS Dual GeForce GTX 1660 TI EVO runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory, while video card Gainward GeForce RTX 2080 runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 120 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.