Comparison of ASRock Phantom Gaming Radeon RX 550 2G video card vs XFX Radeon RX 550 2GB Slim Single Slot Design video card by specifications and benchmarks. ASRock Phantom Gaming Radeon RX 550 2G runs at 1.100 GHz base clock speed and has 2 GB of GDDR5 memory, while video card XFX Radeon RX 550 2GB Slim Single Slot Design runs at 1.100 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.