Comparison of PowerColor Fighter Radeon RX 6600 XT video card vs KFA2 GeForce RTX 2070 EX White (1-Click OC) video card by specifications and benchmarks. PowerColor Fighter Radeon RX 6600 XT runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card KFA2 GeForce RTX 2070 EX White (1-Click OC) runs at 1.410 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 175 W. Compare the table of benchmark results to find out which graphic card is better.