Comparison of ASUS TUF Gaming GeForce GTX 1660 TI video card vs ASUS TUF Gaming GeForce RTX 3090 OC video card by specifications and benchmarks. ASUS TUF Gaming GeForce GTX 1660 TI runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory, while video card ASUS TUF Gaming GeForce RTX 3090 OC runs at 1.395 GHz base clock speed and has 24 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.