Comparison of ASUS Phoenix Radeon RX 550 2G EVO video card vs PowerColor Hellhound Radeon RX 6600 video card by specifications and benchmarks. ASUS Phoenix Radeon RX 550 2G EVO runs at 1.100 GHz base clock speed and has 2 GB of GDDR5 memory, while video card PowerColor Hellhound Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 50 W, and the second is 132 W. Compare the table of benchmark results to find out which graphic card is better.