Comparison of Gainward GeForce GTX 1070 Ti Phoenix GS video card vs GIGABYTE GeForce GTX 1080 D5X 8G video card by specifications and benchmarks. Gainward GeForce GTX 1070 Ti Phoenix GS runs at 1.708 GHz+ 6 % base clock speed and has 8 GB of GDDR5 memory, while video card GIGABYTE GeForce GTX 1080 D5X 8G runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 180 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.