Comparison of GIGABYTE GeForce GTX 1080 Ti Gaming 11G video card vs EVGA GeForce GTX 1660 Ti SC ULTRA BLACK GAMING video card by specifications and benchmarks. GIGABYTE GeForce GTX 1080 Ti Gaming 11G runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory, while video card EVGA GeForce GTX 1660 Ti SC ULTRA BLACK GAMING 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.