Comparison of ASRock Radeon RX 6600 Challenger D video card vs AMD Radeon Pro VII 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 AMD Radeon Pro VII runs at 1.400 GHz base clock speed and has 16 GB of HBM2 memory. The TDP of the first video card is 132 W, and the second is 250 W-17 %. Compare the table of benchmark results to find out which graphic card is better.