Comparison of ASUS ROG Strix Radeon RX 590 video card vs ASRock Phantom Gaming X Radeon RX Vega 56 video card by specifications and benchmarks. ASUS ROG Strix Radeon RX 590 runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 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 225 W, and the second is 210 W. Compare the table of benchmark results to find out which graphic card is better.