Comparison of ASRock Phantom Gaming Radeon RX 550 4G video card vs XFX Radeon RX 550 4GB Double Dissipation video card by specs 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 XFX Radeon RX 550 4GB Double Dissipation runs at 1.100 GHz base clock speed and has 4 GB of GDDR5 memory. The weight is different, -- vs --. The TDP of the first video card is 50 W, and the second is 50 W . Compare the benchmark results to find out which video card is better.