Comparison of MSI GeForce GTX 1080 Ti GAMING X 11G video card vs MSI GeForce GTX 1660 TI VENTUS 6G video card by specifications and benchmarks. MSI GeForce GTX 1080 Ti GAMING X 11G runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card MSI GeForce GTX 1660 TI VENTUS 6G runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.