Comparison of ZOTAC GeForce GTX 1080 IceStorm 2X video card vs ZOTAC GAMING GeForce GTX 1660 AMP 6GB GDDR5 video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 IceStorm 2X runs at 1.607 GHz base clock speed and has 8 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 230 W+ 28 %, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.