Comparison of ZOTAC GeForce GTX 1080 OEM video card vs NVIDIA GeForce GTX 1070 Ti video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 OEM runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory, while video card NVIDIA GeForce GTX 1070 Ti runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 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.