Comparison of PowerColor Radeon RX Vega 56 video card vs KFA2 GeForce RTX 3080 EX Gamer (1-Click OC) 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 3080 EX Gamer (1-Click OC) runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The TDP of the first video card is 210 W, and the second is 320 W. Compare the table of benchmark results to find out which graphic card is better.