Comparison of MSI Radeon RX 5700 XT Mech video card vs PowerColor Radeon RX Vega 56 video card by specifications and benchmarks. MSI Radeon RX 5700 XT Mech runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory, while video card PowerColor Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 225 W, and the second is 210 W. Compare the table of benchmark results to find out which graphic card is better.