Comparison of PowerColor Red Devil Radeon RX 6600 XT video card vs MSI Radeon RX Vega 64 Air Boost 8G OC video card by specifications and benchmarks. PowerColor Red Devil Radeon RX 6600 XT runs at 2.188 GHz+ 11 % base clock speed and has 8 GB of GDDR6 memory, while video card MSI Radeon RX Vega 64 Air Boost 8G OC runs at 1.272 GHz+ 2 % base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 160 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.