Comparison of ASRock Radeon RX 5500 XT Phantom Gaming D 8G OC video card vs Sapphire Radeon RX 6800 video card by specifications and benchmarks. ASRock Radeon RX 5500 XT Phantom Gaming D 8G OC runs at 1.685 GHz+ 5 % base clock speed and has 8 GB of GDDR6 memory, while video card Sapphire Radeon RX 6800 runs at 1.800 GHz+ 6 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 130 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.