Comparison of ASRock Radeon RX 5700 Challenger D 8G OC video card vs KFA2 GeForce GTX 1070 Ti EX video card by specifications and benchmarks. ASRock Radeon RX 5700 Challenger D 8G OC runs at 1.515 GHz+ 3 % base clock speed and has 8 GB of GDDR6 memory, while video card KFA2 GeForce GTX 1070 Ti EX runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 180 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.