Comparison of GIGABYTE GeForce GTX 1070 WINDFORCE 8G (rev. 1.0) video card vs ZOTAC GeForce GTX 1080 Founders Edition video card by specifications and benchmarks. GIGABYTE GeForce GTX 1070 WINDFORCE 8G (rev. 1.0) runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory, while video card ZOTAC GeForce GTX 1080 Founders Edition runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 150 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.