Comparison of PowerColor Radeon RX 6900 XT video card vs KFA2 GeForce GTX 1070 EX Red Edition video card by specifications and benchmarks. PowerColor Radeon RX 6900 XT runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card KFA2 GeForce GTX 1070 EX Red Edition runs at 1.518 GHz+ 1 % base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 300 W, and the second is 150 W. Compare the table of benchmark results to find out which graphic card is better.