Comparison of ZOTAC GeForce GTX 1080 IceStorm 2X video card vs Gainward GeForce RTX 2070 Phoenix GS (DVI) 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 Gainward GeForce RTX 2070 Phoenix GS (DVI) runs at 1.410 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 230 W+ 28 %, and the second is 185 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.