Comparison of PowerColor Red Dragon Radeon RX 6800 XT video card vs XFX Speedster ZERO Radeon RX 6900 XT RGB EKWB Waterblock Limited Edition 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 XFX Speedster ZERO Radeon RX 6900 XT RGB EKWB Waterblock Limited Edition runs at 2.200 GHz+ 21 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 300 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.