Comparison of XFX AMD Radeon RX 570 RS 8GB Black Edition video card vs PowerColor Radeon RX 6700 XT video card by specifications and benchmarks. XFX AMD Radeon RX 570 RS 8GB Black Edition runs at 1.168 GHz base clock speed and has 4 GB of GDDR5 memory, while video card PowerColor Radeon RX 6700 XT runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 150 W, and the second is 230 W. Compare the table of benchmark results to find out which graphic card is better.