Comparison of ASRock Phantom Gaming X Radeon RX Vega 56 video card vs Gainward GeForce GTX 1070 Ti Phoenix GS video card by specifications and benchmarks. ASRock Phantom Gaming X Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card Gainward GeForce GTX 1070 Ti Phoenix GS runs at 1.708 GHz+ 6 % base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 210 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.