Comparison of ASRock Radeon RX 5700 XT Challenger Pro 8G OC video card vs KFA2 GeForce GTX 1070 EX Black Edition video card by specifications and benchmarks. ASRock Radeon RX 5700 XT Challenger Pro 8G OC runs at 1.650 GHz+ 3 % base clock speed and has 8 GB of GDDR6 memory, while video card KFA2 GeForce GTX 1070 EX Black 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 225 W, and the second is 150 W. Compare the table of benchmark results to find out which graphic card is better.