Comparison of ASUS Dual GeForce GTX 1660 OC EVO video card vs ASUS ROG Strix GeForce RTX 2080 Ti OC video card by specifications and benchmarks. ASUS Dual GeForce GTX 1660 OC EVO runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card ASUS ROG Strix GeForce RTX 2080 Ti OC runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 120 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.