Comparison of MSI Radeon RX 580 Gaming 4G video card vs GIGABYTE Radeon RX Vega 56 8G video card by specifications and benchmarks. MSI Radeon RX 580 Gaming 4G runs at 1.257 GHz base clock speed and has 4 GB of GDDR5 memory, while video card GIGABYTE 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 185 W, and the second is 210 W. Compare the table of benchmark results to find out which graphic card is better.