Comparison of ASRock Radeon RX 6700 XT Challenger D 12GB video card vs PowerColor Radeon VII 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 PowerColor Radeon VII runs at 1.400 GHz base clock speed and has 16 GB of HBM2 memory. The TDP of the first video card is 230 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.