Comparison of ASUS AREZ Strix Radeon RX Vega 56 OC Gaming video card vs ASRock Phantom Gaming X Radeon RX Vega 56 video card by specifications and benchmarks. ASUS AREZ Strix Radeon RX Vega 56 OC Gaming runs at 1.297 GHz+ 12 % base clock speed and has 8 GB of HBM2 memory, while video card ASRock Phantom Gaming X Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 300 W+ 43 %, and the second is 210 W. Compare the table of benchmark results to find out which graphic card is better.