Comparison of ZOTAC GeForce GTX 1070 Ti AMP Extreme video card vs PNY GeForce GTX 1080 video card by specs and benchmarks. ZOTAC GeForce GTX 1070 Ti AMP Extreme runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 memory, while video card PNY GeForce GTX 1080 runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The weight is different, -- vs --. The TDP of the first video card is 180 W, and the second is 180 W . Compare the benchmark results to find out which video card is better.