Comparison of ASUS Radeon RX Vega 64 Silver video card vs MSI Radeon RX 6500 XT MECH 2X 4G OC video card by specifications and benchmarks. ASUS Radeon RX Vega 64 Silver runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory, while video card MSI Radeon RX 6500 XT MECH 2X 4G OC runs at 2.200 GHz base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 295 W, and the second is 107 W. Compare the table of benchmark results to find out which graphic card is better.