Comparison of Sapphire Nitro+ Radeon RX 5700 XT 8G video card vs GIGABYTE Radeon RX Vega 56 8G video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX 5700 XT 8G runs at 1.770 GHz+ 10 % base clock speed and has 8 GB of GDDR6 memory, while video card GIGABYTE Radeon RX Vega 56 8G runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 265 W+ 18 %, and the second is 210 W. Compare the table of benchmark results to find out which graphic card is better.