Comparison of ASRock Phantom Gaming X Radeon RX Vega 56 video card vs EVGA GeForce GTX 1070 Ti GAMING 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 EVGA GeForce GTX 1070 Ti GAMING runs at 1.607 GHz 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.