Comparison of EVGA GeForce GTX 1660 Ti XC BLACK GAMING video card vs ZOTAC GAMING GeForce RTX 2080 Ti Twin Fan video card by specifications and benchmarks. EVGA GeForce GTX 1660 Ti XC BLACK GAMING runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory, while video card ZOTAC GAMING GeForce RTX 2080 Ti Twin Fan 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.