Comparison of Gainward GeForce RTX 2070 Phantom GS video card vs Colorful GeForce RTX 2080 Ti CH-V video card by specifications and benchmarks. Gainward GeForce RTX 2070 Phantom GS runs at 1.410 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Colorful GeForce RTX 2080 Ti CH-V runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 185 W+ 6 %, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.