Comparison of PowerColor Radeon RX 5700 XT video card vs PowerColor Radeon RX 6800 Fighter video card by specifications and benchmarks. PowerColor Radeon RX 5700 XT runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory, while video card PowerColor Radeon RX 6800 Fighter runs at 1.775 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 225 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.