Comparison of Sapphire Nitro+ Radeon RX 5700 XT BE 8G video card vs ASRock Radeon RX 6900 XT Phantom Gaming D 16G OC video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX 5700 XT BE 8G runs at 1.730 GHz+ 8 % base clock speed and has 8 GB of GDDR6 memory, while video card ASRock Radeon RX 6900 XT Phantom Gaming D 16G OC runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 265 W+ 18 %, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.