Comparison of ASRock Radeon RX 5500 XT Challenger D 4G OC video card vs GIGABYTE RX 5500 XT D6 8G video card by specifications and benchmarks. ASRock Radeon RX 5500 XT Challenger D 4G OC runs at 1.685 GHz+ 5 % base clock speed and has 4 GB of GDDR6 memory, while video card GIGABYTE RX 5500 XT D6 8G runs at 1.647 GHz+ 2 % base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 130 W, and the second is 130 W. Compare the table of benchmark results to find out which graphic card is better.