Comparison of PowerColor Radeon RX 5700 ITX video card vs XFX Radeon RX 6800 XT video card by specifications and benchmarks. PowerColor Radeon RX 5700 ITX runs at 1.465 GHz base clock speed and has 8 GB of GDDR6 memory, while video card XFX Radeon RX 6800 XT runs at 1.825 GHz 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.