Comparison of ASUS Phoenix Radeon RX 550 4G EVO video card vs XFX Radeon RX 590 Fatboy 8GB video card by specifications and benchmarks. ASUS Phoenix Radeon RX 550 4G EVO runs at 1.100 GHz base clock speed and has 4 GB of GDDR5 memory, while video card XFX Radeon RX 590 Fatboy 8GB runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 50 W, and the second is 225 W. Compare the table of benchmark results to find out which graphic card is better.