Comparison of XFX Radeon RX 550 4GB Double Dissipation video card vs PowerColor Red Dragon Radeon 550 2GB 64BIT GDDR5 video card by specs and benchmarks. XFX Radeon RX 550 4GB Double Dissipation runs at 1.019 GHz base clock speed and has 4 GB of GDDR5 memory, while video card PowerColor Red Dragon Radeon 550 2GB 64BIT GDDR5 runs at 1.019 GHz base clock speed and has 2 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.