Comparison of PowerColor Red Devil Radeon RX 6800 XT Limited Edition video card vs ASUS ROG Strix Radeon RX Vega 56 OC Gaming video card by specifications and benchmarks. PowerColor Red Devil Radeon RX 6800 XT Limited Edition runs at 1.900 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory, while video card ASUS ROG Strix Radeon RX Vega 56 OC Gaming runs at 1.297 GHz+ 12 % base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 300 W, and the second is 300 W+ 43 %. Compare the table of benchmark results to find out which graphic card is better.