Comparison of PowerColor Radeon RX 5500 XT Red Dragon video card vs MSI Radeon RX 6600 XT MECH 2X 8G OC video card by specifications and benchmarks. PowerColor Radeon RX 5500 XT Red Dragon runs at 1.685 GHz+ 5 % base clock speed and has 8 GB of GDDR6 memory, while video card MSI Radeon RX 6600 XT MECH 2X 8G OC runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 130 W, and the second is 160 W. Compare the table of benchmark results to find out which graphic card is better.