Comparison of PowerColor Radeon RX Vega 64 video card vs MSI Radeon RX 6800 XT Gaming Trio Plus 16G video card by specifications and benchmarks. PowerColor Radeon RX Vega 64 runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory, while video card MSI Radeon RX 6800 XT Gaming Trio Plus 16G runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 295 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.