Comparison of Sapphire Radeon VII video card vs Colorful iGame GeForce GTX 1070 Ti Vulcan U Top-V video card by specifications and benchmarks. Sapphire Radeon VII runs at 1.400 GHz base clock speed and has 16 GB of HBM2 memory, while video card Colorful iGame GeForce GTX 1070 Ti Vulcan U Top-V runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 300 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.