Comparison of ASUS TUF Gaming X3 GeForce GTX 1660 TI OC video card vs GALAX GeForce RTX 2080 EX OC video card by specifications and benchmarks. ASUS TUF Gaming X3 GeForce GTX 1660 TI OC runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory, while video card GALAX GeForce RTX 2080 EX OC 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.