Comparison of MSI Radeon RX 5500 XT Mech 8G OC video card vs XFX Radeon RX Vega 64 Silver Fan video card by specifications and benchmarks. MSI Radeon RX 5500 XT Mech 8G OC runs at 1.647 GHz+ 2 % base clock speed and has 8 GB of GDDR6 memory, while video card XFX Radeon RX Vega 64 Silver Fan runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 130 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.