Comparison of ASRock Radeon RX 5600 XT Phantom Gaming D3 6G OC video card vs GIGABYTE Radeon RX 580 Gaming 8G MI video card by specifications and benchmarks. ASRock Radeon RX 5600 XT Phantom Gaming D3 6G OC runs at 1.530 GHz+ 35 % base clock speed and has 6 GB of GDDR6 memory, while video card GIGABYTE Radeon RX 580 Gaming 8G MI runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 160 W, and the second is 185 W. Compare the table of benchmark results to find out which graphic card is better.