Comparison of ASRock Radeon RX 6600 XT Challenger D 8GB OC video card vs PNY RTX A2000 12GB video card by specifications and benchmarks. ASRock Radeon RX 6600 XT Challenger D 8GB OC runs at 2.000 GHz+ 2 % base clock speed and has 8 GB of GDDR6 memory, while video card PNY RTX A2000 12GB runs at 0.562 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 70 W. Compare the table of benchmark results to find out which graphic card is better.