Comparison of Sapphire Pulse Radeon RX 570 8GD5 video card vs Biostar Radeon RX Vega 56 8G video card by specifications and benchmarks. Sapphire Pulse Radeon RX 570 8GD5 runs at 1.168 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Biostar Radeon RX Vega 56 8G runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 150 W, and the second is 210 W. Compare the table of benchmark results to find out which graphic card is better.