Comparison of Gainward GeForce GTX 1070 video card vs GALAX GeForce GTX 1080 Ti EX OC video card by specifications and benchmarks. Gainward GeForce GTX 1070 runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GALAX GeForce GTX 1080 Ti EX OC runs at 1.531 GHz+ 3 % 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.