Comparison of ASRock Phantom Gaming Radeon RX 550 4G video card vs PowerColor Red Dragon Radeon RX 550 2GB GDDR5 Low Profile video card by specifications and benchmarks. ASRock Phantom Gaming Radeon RX 550 4G runs at 1.100 GHz base clock speed and has 4 GB of GDDR5 memory, while video card PowerColor Red Dragon Radeon RX 550 2GB GDDR5 Low Profile runs at 1.019 GHz base clock speed and has 2 GB of GDDR5 memory. The TDP of the first video card is 50 W, and the second is 50 W. Compare the table of benchmark results to find out which graphic card is better.