Comparison of ASUS Dual Radeon RX 580 OC 4G video card vs ASUS Radeon RX Vega 64 Silver video card by specifications and benchmarks. ASUS Dual Radeon RX 580 OC 4G runs at 1.257 GHz base clock speed and has 4 GB of GDDR5 memory, while video card ASUS Radeon RX Vega 64 Silver runs at 1.247 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 295 W. Compare the table of benchmark results to find out which graphic card is better.