Comparison of PowerColor Red Dragon Radeon RX 580 4GB V2 video card vs MSI Radeon RX 580 Armor 8G video card by specs and benchmarks. PowerColor Red Dragon Radeon RX 580 4GB V2 runs at 1.257 GHz base clock speed and has 4 GB of GDDR5 memory, while video card MSI Radeon RX 580 Armor 8G runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory. The weight is different, -- vs --. The TDP of the first video card is 185 W, and the second is 185 W . Compare the benchmark results to find out which video card is better.