Comparison of ZOTAC GeForce GTX 1070 video card vs Colorful iGame GeForce GTX 1080 Ti Vulcan X OC-V video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Colorful iGame GeForce GTX 1080 Ti Vulcan X OC-V runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 220 W+ 47 %, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.