Comparison of PowerColor Radeon RX Vega 56 Nano Edition video card vs KFA2 GeForce RTX 3070 EX Gamer (1-Click OC) video card by specifications and benchmarks. PowerColor Radeon RX Vega 56 Nano Edition runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card KFA2 GeForce RTX 3070 EX Gamer (1-Click OC) runs at 1.500 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 220 W. Compare the table of benchmark results to find out which graphic card is better.