Comparison of ASRock Radeon RX 6600 Challenger D video card vs Gainward GeForce RTX 2070 Phoenix (DVI) video card by specifications and benchmarks. ASRock Radeon RX 6600 Challenger D runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Gainward GeForce RTX 2070 Phoenix (DVI) runs at 1.410 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 132 W, and the second is 185 W+ 6 %. Compare the table of benchmark results to find out which graphic card is better.