Comparison of SAPPHIRE NITRO+ Radeon RX 6700 XT video card vs ASRock Phantom Gaming X Radeon VII 16G video card by specifications and benchmarks. SAPPHIRE NITRO+ Radeon RX 6700 XT runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card ASRock Phantom Gaming X Radeon VII 16G runs at 1.400 GHz base clock speed and has 16 GB of HBM2 memory. The TDP of the first video card is 260 W+ 13 %, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.