Comparison of ASUS ROG Strix Radeon RX 570 OC 8G video card vs XFX Radeon RX 6900 XT video card by specifications and benchmarks. ASUS ROG Strix Radeon RX 570 OC 8G runs at 1.178 GHz+ 1 % base clock speed and has 8 GB of GDDR5 memory, while video card XFX Radeon RX 6900 XT runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 150 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.