Comparison of Sapphire Pulse Radeon RX 5500 XT 8G video card vs ASRock Radeon RX 6700 XT Challenger D 12GB OC video card by specifications and benchmarks. Sapphire Pulse Radeon RX 5500 XT 8G runs at 1.607 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ASRock Radeon RX 6700 XT Challenger D 12GB OC runs at 2.330 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 135 W+ 4 %, and the second is 230 W. Compare the table of benchmark results to find out which graphic card is better.