Comparison of GIGABYTE Radeon RX 570 Gaming 8G video card vs PowerColor Fighter Radeon RX 6600 XT video card by specifications and benchmarks. GIGABYTE Radeon RX 570 Gaming 8G runs at 1.178 GHz+ 1 % base clock speed and has 8 GB of GDDR5 memory, while video card PowerColor Fighter Radeon RX 6600 XT runs at 1.968 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 160 W. Compare the table of benchmark results to find out which graphic card is better.