Comparison of MSI Radeon RX 5500 XT Mech 8G OC video card vs PowerColor Red Devil Radeon RX 6700 XT video card by specifications and benchmarks. MSI Radeon RX 5500 XT Mech 8G OC runs at 1.647 GHz+ 2 % base clock speed and has 8 GB of GDDR6 memory, while video card PowerColor Red Devil Radeon RX 6700 XT runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 130 W, and the second is 230 W. Compare the table of benchmark results to find out which graphic card is better.