Comparison of XFX AMD Radeon RX 570 RS 8GB Black Edition video card vs Sapphire Radeon RX 5700 8G 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 Sapphire Radeon RX 5700 8G runs at 1.465 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 150 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.