Comparison of GIGABYTE AORUS Radeon RX 570 4G video card vs PowerColor Hellhound Radeon RX 6600 video card by specifications and benchmarks. GIGABYTE AORUS Radeon RX 570 4G runs at 1.178 GHz+ 1 % base clock speed and has 4 GB of GDDR5 memory, while video card PowerColor Hellhound Radeon RX 6600 runs at 1.626 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 132 W. Compare the table of benchmark results to find out which graphic card is better.