Comparison of PowerColor Red Devil Radeon RX 6600 XT video card vs GIGABYTE Radeon RX 6500 XT EAGLE 4G video card by specifications and benchmarks. PowerColor Red Devil Radeon RX 6600 XT runs at 2.188 GHz+ 11 % base clock speed and has 8 GB of GDDR6 memory, while video card GIGABYTE Radeon RX 6500 XT EAGLE 4G runs at 2.200 GHz base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 107 W. Compare the table of benchmark results to find out which graphic card is better.