Comparison of GIGABYTE GeForce GTX 1070 Xtreme Gaming 8G video card vs ZOTAC GeForce GTX 1080 Ti Founders Edition video card by specifications and benchmarks. GIGABYTE GeForce GTX 1070 Xtreme Gaming 8G runs at 1.670 GHz+ 11 % base clock speed and has 8 GB of GDDR5 memory, while video card ZOTAC GeForce GTX 1080 Ti Founders Edition runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 150 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.