Comparison of EVGA GeForce GTX 1660 Ti XC OC video card vs ASUS ROG Strix GeForce RTX 3080 Ti OC video card by specifications and benchmarks. EVGA GeForce GTX 1660 Ti XC OC runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory, while video card ASUS ROG Strix GeForce RTX 3080 Ti OC 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.