Comparison of EVGA GeForce GTX 1080 Ti SC Black Edition GAMING video card vs ZOTAC GAMING GeForce GTX 1660 AMP 6GB GDDR5 video card by specifications and benchmarks. EVGA GeForce GTX 1080 Ti SC Black Edition GAMING runs at 1.556 GHz+ 5 % base clock speed and has 11 GB of GDDR5X memory, while video card ZOTAC GAMING GeForce GTX 1660 AMP 6GB GDDR5 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 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.