Comparison of ASUS Dual GeForce GTX 1660 TI EVO video card vs Gainward GeForce RTX 3080 Ti Phantom 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 3080 Ti Phantom runs at 1.365 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 120 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.