Comparison of AMD Radeon Pro W6400 video card vs PowerColor Red Dragon Radeon RX 550 4GB GDDR5 V2 video card by specs and benchmarks. AMD Radeon Pro W6400 runs at 2.331 GHz base clock speed and has 4 GB of GDDR6 memory, while video card PowerColor Red Dragon Radeon RX 550 4GB GDDR5 V2 runs at 2.331 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.