Comparison of Sapphire Pulse Radeon RX Vega 56 video card vs KFA2 GeForce RTX 2080 Ti HOF video card by specifications and benchmarks. Sapphire Pulse Radeon RX Vega 56 runs at 1.208 GHz+ 4 % base clock speed and has 8 GB of HBM2 memory, while video card KFA2 GeForce RTX 2080 Ti HOF runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 280 W+ 33 %, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.