Comparison of PowerColor Red Dragon Radeon RX 6800 XT video card vs Sapphire Radeon RX Vega 64 LE video card by specifications and benchmarks. PowerColor Red Dragon Radeon RX 6800 XT runs at 1.900 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory, while video card Sapphire Radeon RX Vega 64 LE runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 300 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.