Comparison of ZOTAC GeForce GTX 1070 AMP Extreme video card vs Colorful iGame GeForce GTX 1080 Ti Neptune W-V video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 AMP Extreme runs at 1.632 GHz+ 8 % base clock speed and has 8 GB of GDDR5 memory, while video card Colorful iGame GeForce GTX 1080 Ti Neptune W-V runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 250 W+ 67 %, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.