Comparison of ZOTAC GeForce GTX 1080 AMP Extreme video card vs EVGA GeForce GTX 1080 Ti SC2 GAMING video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 AMP Extreme runs at 1.771 GHz+ 10 % base clock speed and has 8 GB of GDDR5X memory, while video card EVGA GeForce GTX 1080 Ti SC2 GAMING runs at 1.556 GHz+ 5 % base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 270 W+ 50 %, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.