Comparison of ASRock Radeon RX 5700 Challenger D 8G OC video card vs Gainward GeForce RTX 2080 Ti Phoenix 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 Gainward GeForce RTX 2080 Ti Phoenix runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 180 W, and the second is 260 W+ 4 %. Compare the table of benchmark results to find out which graphic card is better.