Comparison of PowerColor Radeon RX Vega 56 video card vs KFA2 GeForce RTX 2080 EX (1-Click OC) (GE Ver) video card by specifications and benchmarks. PowerColor Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card KFA2 GeForce RTX 2080 EX (1-Click OC) (GE Ver) runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 210 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.