Comparison of PowerColor Red Devil Radeon RX 6600 XT video card vs Gainward GeForce RTX 2060 Ghost 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 Gainward GeForce RTX 2060 Ghost runs at 1.365 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 160 W. Compare the table of benchmark results to find out which graphic card is better.