Comparison of GIGABYTE Radeon RX 5700 XT 8G video card vs ASRock AMD Phantom Gaming U Radeon RX 590 8G OC video card by specs and benchmarks. GIGABYTE Radeon RX 5700 XT 8G runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ASRock AMD Phantom Gaming U Radeon RX 590 8G OC runs at 1.605 GHz base clock speed and has 8 GB of GDDR5 memory. The weight is different, 1110 g vs --. The TDP of the first video card is 225 W, and the second is 225 W . Compare the benchmark results to find out which video card is better.