Comparison of PowerColor Red Devil Radeon RX 6600 XT video card vs KFA2 GeForce RTX 2070 SUPER EX (1-Click OC) White 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 KFA2 GeForce RTX 2070 SUPER EX (1-Click OC) White runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.