Comparison of Sapphire Radeon RX Vega 56 video card vs XFX Radeon RX Vega 56 video card by specs and benchmarks. Sapphire Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card XFX Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory. The weight is different, 1090 g vs 1090 g. The TDP of the first video card is 210 W, and the second is 210 W . Compare the benchmark results to find out which video card is better.