Comparison of ASRock Radeon RX 6700 XT Challenger D 12GB video card vs Gainward GeForce RTX 3070 Phantom+ LHR video card by specifications and benchmarks. ASRock Radeon RX 6700 XT Challenger D 12GB runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card Gainward GeForce RTX 3070 Phantom+ LHR runs at 1.500 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 230 W, and the second is 250 W+ 14 %. Compare the table of benchmark results to find out which graphic card is better.