Comparison of GIGABYTE GeForce GTX 1080 Ti Gaming OC BLACK 11G video card vs Colorful iGame GeForce GTX 1660 Ti Ultra 6G-V video card by specifications and benchmarks. GIGABYTE GeForce GTX 1080 Ti Gaming OC BLACK 11G runs at 1.518 GHz+ 3 % base clock speed and has 11 GB of GDDR5X memory, while video card Colorful iGame GeForce GTX 1660 Ti Ultra 6G-V runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 280 W+ 12 %, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.