Comparison of PowerColor Radeon RX 5700 video card vs ASRock Radeon RX 6800 XT Taichi X 16G OC video card by specifications and benchmarks. PowerColor Radeon RX 5700 runs at 1.465 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ASRock Radeon RX 6800 XT Taichi X 16G OC runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 180 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.